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Table 3.1 First Merger Wave 1897 - 1904 10
Table 3.2 Merger and Acquisitions in 1990s 18

Figure 3.1 First Merger Wave 1897 -1904 11
Figure 3.2 Third Merger Wave 1963 - 1970 12
Figure 3.3 Merger & Acquisitions in 1970 -1980 14

LITERATURE REVIEW

Many firms used corporate mergers or acquisitions as business strategy to accomplish various objectives. For instance, businesses used acquisitions to enter into new markets and regions, allocate capital or gain technical expertise and knowledge. Therefore, organizations often utilize strategic mergers and acquisitions in order to grow or survive. However most of the poorly managed acquisitions or merger resulted in disappointing performance and up to 50 percent are considered unsuccessful (see Louis, 1982). Furthermore, according to Smith and Hershman (1997), it was held by Mercer Management Consulting that in 1980s, 57 percent of acquisitions were failed and the successful corporate acquisitions in 1990s were hardly 50 percent (p.39, cited in Smith and Hershman, 1997).

To date, merger or acquisition is one of the most widely used instruments to enhance the growth of organizations. Systematic and sophisticated corporate research helps companies to understand the pre and post-acquisitions performance and achieving other business objectives (as discussed in Singh & Zollo, 2000). However, according to Sirower (1997), empirical academic literature does not provide any clear understanding, which facilitates the managers to maximise the success of acquisitions or merger programs. Therefore, understanding the source of value creation is critical to determine the causes of failure or success in corporate merger or acquisitions.

The literature review presented in this section critically evaluates and analyze the earlier studies in order to solve the paradigm of “Merger & Acquisitions and Value Creation�.

Corporate Acquisitions and Their Research Paradigms

Datta et al. (1992) suggested two distinct frameworks for acquisitions programmes to identify sources of shareholder's wealth i.e. strategic management and financial economics literature and both approaches follow different research directions.

The strategic management approach focused on factors that have been controlled by management. For instance, Datta et al (1992) suggested that in order to assess the post-acquisition performance, this approach attempts to differentiate between various diversification strategies and types of acquisitions or types of payment in acquisitions (i.e. stock vs. cash). In contrast, financial economic research attempted to prove the unique hypothesis of market for corporate control. This approach views the acquisition activities as a contest among different management teams in a competition to control corporate firms as argued by Datta et al (1992). Therefore, this view suggests that the value creation through merger or acquisitions is decided by capital market and its characteristics including its competitiveness such as regulatory modification affecting a particular market (see Datta et al, 1992).

However, these two methodologies are unable to explain the factors resulting in unsuccessful corporate acquisitions. Thus, many academics such as Chatterjee (1992), attempted to identify critical variables of ineffective performance in acquisitions or merger activities by studying the relationship between post-acquisition performance and integration. While the initial notion by Kitching (1967) that the key factor for a successful corporate acquisition is the post-acquisition integration process, it was recognised that acquisition or merger activities create value not only from strategic factors realised through synergies (see Chatterjee, 1992), but also from the process itself, which leads to anticipated synergistic factors, as reflect in capital market expectations (see Jemison and Sitkin, 1986). Therefore, it is very important to understand the processes and factors resulting in corporate merger and acquisitions' value creation before we critically evaluate the research paradigm of value creation.

Evolution of Acquisitions

In order to improve the understanding of the research hypothesis, firstly this paper attempts to review trends of acquisitions and mergers followed by comments on value creation during these periods. For illustration purposes, I will focus my attention to the US economy considering the fact that corporate sector is enriched with these activities and capital markets of United States are much developed comparative to rest of the world. Following section presents the analysis of corporate mergers and acquisitions programmes dated back to1897.

The First Wave, 1897-1904:

According to Gaughan (1999), this particular period is dominated by horizontal acquisitions resulting surge in stock markets and ultimately creation of monopolies. Some of the today's giant conglomerates created in first wave include General Electric, American Tobacco, Du Pont, Kodak and Standard Oil (see Gaughan, 1999).

First Merger Wave 1897 - 1904

Year Number of Mergers

1897 69
1898 303
1899 1208
1900 340
1901 423
1902 379
1903 142
1904 79
Table 3.1 First Merger Wave 1897 - 1904
Source: Gaughan (1999), p.24

Figure 3.1 First Merger Wave 1897 -1904
Data Source: Gaughan (1999), p.24

The Second Wave, 1916-1929:

In contrast to first wave which is termed as merging for monopoly, the second wave is termed as merging for oligopoly. Gaughan (1999) pointed out that the reason of this terminology is the predominance of vertical or horizontal integration of companies during the period of 1925 to end of the decade. Moreover, Jemison and Stikin (1986) argued that the abundant capital availability stimulated by favourable economic conditions resulted in prominent corporate mergers and integration. Further according to Gaughan (1999), the antitrust law force during this era was stricter comparative to the first merger wave, which created more oligopolies and vertical integration and fewer monopolies in contrast to earlier wave.

The Third Wave, 1965-1969:

According to Gaughan (1986), the decade of 1960's observed controversial of the merger and acquisitions activities and termed as conglomerates. The companies such as ITT (International Telephone and Telegraph Corporation, USA) and Textron acquired numerous unrelated businesses to diversify and to reduce cyclic risks. Furthermore, during this period the conglomerates not only grew rapidly and profitably but the management were perceived to be skilful as well, which facilitated the diversity in acquisitions and operations of the companies (see Judelson, 1969). For instance, Geneen (1984) documented that during this wave ITT built itself into a highly diversified conglomerate by acquiring various businesses such as insurance, food and car rentals. Moreover, he found that executives of the company used the advanced financial tools like detailed budgeting and tight financial controls to make these acquisitions successful and well-functioning. Following figure presents the overview of the activities during the period:

Scholars like Goold and Luchs (1993) argued that general management skills were one of the vital factors in successful acquisitions and mergers during this era, which also helped corporations to diversify in different businesses. Moreover, engaging in unrelated business by many companies was based on the assumptions that different businesses would not require dissimilar managerial skills (see Goold and Luchs, 1993).

However, in late 1960s companies start facing performance problems and the share price of these conglomerates such as Textron fell almost 50% comparative to 9% drop in Dow Jones Industrial average (see Bonge and Coleman, 1972). Furthermore, in early 1970's companies began to experience profitless growth like General Electric sales increased by 40% from 1965 to 1970 but its profit actually dropped (see Goold and Quinn, 1990).

According to Gaughan (1999), the era has been ended when ITT spin off in three different companies. It is perceived that most of the mergers during the period failed and companies jettisoned their under-performing and unrelated business to face the competitive environment (see Sikora, 1995). In addition, Sadlter et al (1997) observed that the combined value of businesses separated from their parent firms significantly increased to more than $100 billion in 1996 comparative to 1993 figure of $17.5 billion.

Acquisitions in the 1970s:

The merger and acquisition activities decreased significantly in 1970s, which can be seen in the following figure.

Figure 3.3 Merger & Acquisitions in 1970 -1980
Source: Gaughan (1999), p.36

As a consequence of problem in merger and acquisitions activities experienced by conglomerates, the senior executives realised that only general management skills are not sufficient for a successful transactions (see Chandler, 1962). Therefore, they focused their attentions toward the long term company's objectives instead of operating of strategic business units (see Christensen, 1965).

Andrews (1971) highlighted that this change introduced the concept of corporate strategy for firms and most CEO's of the organizations started accepting that strategy is their unique and primary task. However, corporate strategy poses some practical problem and did not help executives in deciding about allocation of resources among businesses especially when each investment proposal has a different strategy (see Goold and Luchs, 1993). Moreover, Bower (1970) argued that investment decision should be part of overall business strategy rather than prevaricate on project to project basis.

In 1970's these revolutions in corporate finance lead to the development of portfolio planning by Boston Consulting Group (1970). Soon, portfolio planning became famous in corporate sectors and according to the survey of Haspeslagh (1982) by 1979, 45 percent of the Fortune 500 companies were using portfolio planning in some form.

However, with the passage of time problems related to portfolio planning emerged. As Goolds and Luchs (1993), argued that the corporate manager with long experience of particular sector of the industry found extremely difficult to manage their newly acquired businesses in vibrant and unfamiliar sectors. Consequently, this affected the performance of new acquisitions or mergers of the firms. In search of solution to this problem Hamermesh and White (1984) found that administration was a vital factor in explain business performance of mergers or acquisitions but many organizations incorrectly addressed the approach.

The Fourth Wave, 1981-1989:

The decade of 1980's seen another merger wave in business world. In this period, merger deals were frequent and larger and total value of mergers were approximately $.13 trillion in US (see Sikora, 1995).

This was influenced by service sector and significant support from investors; lenders and globalization facilitated companies to finance the buyout deals (see Sikora, 1995). Moreover, the reasons of the fourth merger wave were excess capacity (see Jensen, 1993), agency problems (see Jensen, 1988), market failure (see Shleifer & Vishny, 1997), and tax and antitrust law changes (see Bhagat et al, 1990).

It seems that during 80s, diversified firms do not have capacity to create values therefore companies start re-thinking about role of corporate management as well as appropriate strategies for diversified firms. As highlighted by Goold and Luchs (1993) highlighted that in order to survive firms cut back costs and scale down their staffs but these were not adequate to create value. Furthermore, they argued that diversification strategies failed to create value for many businesses. Nevertheless, these failures compelled senior managers to transform their primary goals to creating shareholders' values instead of building huge businesses (see Porter, 1987).

Moreover, management of the companies started evaluating corporate performance like stock market by using economic indicator instead of accounting measures and take whatever steps were essential to enhance the value of their firm's stock (see Goold and Luchs, 1993). However, value based planning based on financial tools of Return on Equity (ROE), internal rate of return and discounted cash flow provided different views to managers about competitive advantages and stock prices (see Rappaport, 1986). Further, Goold and Luchs (1993) pointed out that a higher stock price could be a reward for creating value.

However, during the era of 80s firms that did not diversify into unrelated businesses and specialize into their core industry were able to create value and turn out to be successful companies (see Peter and Waterman 1982). Mintzberg and Lampel (1999) also support this notion by arguing that focused corporations which know their customers, have deep knowledge and understand their missions were better able to create value in contrast to companies that applied the diversification concept of value creation.

In summary of the merger and acquisitions activities in 1960s and 1980s, it can be assert that conglomeration and diversification were the dominant trends in 1960s contrast to specialization and consolidations phenomena of 1980s. However, empirical evidence on value creation tends to suggest that significant merger and acquisitions of 60s reversed subsequently and did not lead to profitability. According to Shleifer and Vishny (1994) many of the conglomerates created in 1960s were destroyed in 1980s, which provides the evidence of failure in notion of “merger & acquisitions and value creation� that was not expected in 1960s. <

The Current Wave, 1990-Present:

According to Gaughan (1999), in contrast to 1960s decade of conglomerates and 1980s period of Leveraged Buyouts (LBO), the dominant deals of 90s were designed with a view to fit strategically among merging firms. Moreover, the forces behind the merger and acquisitions activities were different than earlier periods and corporate sector seen some of mega-deals during that period. For instance in 1996, the top 100 deals of merger and acquisitions were worth more than $1 billion or approximately 53.5% of total transactions (see Sikora, 1997).

Merger & Acquisitions in 1990s

Year Number of Deals Value ($ Billions)
1980 1558 34.8
1981 2328 69.5
1982 2299 60.7
1983 2395 52.7
1984 3176 126.1
1985 3490 146.1
1986 2523 220.8
1987 2517 196.5
1988 3011 291.3
1989 3825 325.1
1990 4312 206.8
1991 3580 143.1
1992 3752 125.3
1993 4148 177.3
1994 4962 276.5
1995 6209 375.0
1996 6828 550.7
Table 3.2 Merger and Acquisitions in 1990s
Data Source: (www.mergerstat.com)

The era of 90s was said to the decade of Consolidation; which means combination of operating and management resources between two companies as well as their stocks, assets and liabilities (see Lipin, 1997).

Furthermore, in 1990s, stable economic environment, relax antitrust laws, stock market's favourable conditions and low cost of capital were the catalyst of merger and acquisition trends. However, still many firms failed to create shareholder value and according to study by Mercer Management Consulting Inc. (1997) 48 percent of mergers failed to generate shareholder value in 90s comparative to 57 percent failure of 1980s (p.39, cited in Smith and Hershman, 1997). Nonetheless, the firms in 90s believed that larger pools of assets are essential either to survive or to grow but the question remains that how to discover ways to create value for portfolio of firm's businesses? (see Goold and Luchas, 1993). To resolve this anomaly, three possible explanations have been identified:

Firstly, as shown by Porter (1985) that diversification should be limited to companies which have synergy potential and without synergy a diversified business is nothing more than mutual fund. He also suggested that synergies can be attained when the portfolio of businesses create values more than sum of its individual components. Besides, the notion of synergy should be based on economies of scale and cost saving strategies (see Porter, 1985).

However, in practice it has been found by studies such as Chatterjee (1992) that gaining synergy is not an easy task and most acquisitions and merger gains arise from either disposals of assets or from restructuring rather than synergistic benefits. It seems that synergy was a primary rationale for merger and acquisitions in the era but remains anomaly from value creation prospective as discussed by Goold and Luchs (1993).

Secondly, the corporate strategy of the firms should focus on exploiting core competencies. For instance, Prahalad and Hamel (1989) suggested that the corporate portfolio should be based on technological competencies instead of portfolio of businesses. Similarly, Itami (1989) argued that invisible assets like reputation, brand names or customers list are the most valuable source for sustaining competitive advantage and could be used to create value by exploiting competitive opportunities. Furthermore, other competencies such as technology or managerial expertise can also be used to enhance the performance of business portfolio (see Haspeslagh and Jemison, 1991).

However, this approach also has some drawbacks; for example, Goold and Luchs, pointed out that it can be difficult to assess the contribution of investment in building the competencies of a business especially when the investment is in new business area.

Thirdly, the best way to create value via successful diversification is to build a portfolio of businesses, which fits with the manager's logic and their management style (see Parahalad and Bettis, 1986). If conglomerates diversification is based on business with similar strategic logic then it's possible to add value to business by adopting a common approach across all the business units. For instance Goold and Luchs (1993) exposed that sharing the skills or activities across organization can help corporate management to realize synergies. Moreover, Goold and Campbell (1987) found the evidence that top executives also find it difficult to deal with a wide range of styles and approaches.

Review of Major Areas in M&A

This section presents the literature review of major areas focused by academics in merger and acquisition field. Consequently following five sub-sections have been established to review the academic literature:

Performance & Success in Merger and Acquisitions
People in Merger and Acquisitions
International Prospects of Merger and Acquisitions
Best Practices in Merger and Acquisitions
Valuation Issues in Merger and Acquisitions

The measurement of success in merger and acquisition activities is mainly through quantitative research and is subject to various studies such as Gosh (2001); Healy et al (1992), in the field of finance or economics and also other directly related fields.

People are normally unobserved in merger and acquisitions, however extensive studies like Bliss and Rosen (2001), addressed issues from ethical and organizational learning to more in depth personal perspective.

Similarly, increasing trend of international trade and globalization attracted the attention of many researchers, for instance Rossi and Volpin (2004).

The valuation of the companies is often overlooking in the field of merger and acquisitions. However, it is a very critical part of acquisition process and could be very helpful not only in the pre-acquisition stage but also during the acquisition process as well as at post-acquisition stage (see Becher, 2001).

Finally, the best practices research in the field of merger and acquisition is usually done in the form of case studies but the quality and intensity of these studies vary widely (see Marks and Mirvis, 2001).

Performance and Success in M&A

As stated before companies often engaged in the series of acquisitions and merger activities and early studies such as Barney (1988), tend to show that related acquisitions performed better than other acquisition transactions. However, relatedness itself does not create value for acquiring companies but synergy is the vital factor that helps companies to generate abnormal returns from acquisition programs. For example, Barney (1988) showed that synergistic cash flow stemming from relatedness, which is unique and private creates abnormal returns for shareholders of acquiring firm.

However, later studies such as Hayward (2002), suggested that different level of relatedness results in various degree of success and moderately similar companies tend to be more successful than the companies that are highly similar or dissimilar in business or size to one another. He further concluded that if a firm experienced small losses in past acquisition in contrast to high losses or high gains then it has better chances of success in prospective acquisition. In addition, the timing of acquisition plays a vital role in success of the transaction and should not be too close or far-away from central acquisition (see Hayward, 2002). Similarly, Brown and Eisenhard (1997) argued that companies benefit differently depending upon their experimenting and timing of the merger and acquisition activities.

Moreover, when the acquiring company has some inimitable resources then it can create value by utilizing these resources in target's company as suggested by Capron and Pistre (2000). However, they also added that if the source of synergies is recognized in target firm than market associate expected gains to target firm due to the competition among potential bidders. Consequently, this competition raises the price of target firm and would create value for shareholders of the target firm but also lead to under performance of acquirer. Nevertheless, performance success through merger and acquisitions is still controversial among academics as pointed out by Cording et al (2002).

To resolve the issue Chatterjee (1992) measured the cumulative average of abnormal returns (CAAR) during the period of 11 months before the tender offer until 60 months after the tender offer. After studying the sample of 577 tender offers between the periods of 1963 to 1986; he suggested that net gain arises for the economy from these transactions but it does not necessarily create gains for everyone involved in merger and acquisition. More specifically, CAAR after 60 months were observed to be negative for unsuccessful bidders, zero for successful bidder and positive for target company. Furthermore, Chatterjee (1992) found much higher positive CAAR for restructured target companies in contrast to non-restructured targets.

Certain studies view the merger and acquisition transactions from a different prospective. For example, Golbe and White (1993) proved in their study that macroeconomic environments influence the merger activities and the number of merger transactions increases in time of economic expansion comparative to decrease in programme at the time of economic down turn.Similarly, Amburgey and Miner (1992) studied the effects of companies' momentum on merger activities and suggested that managers follow the past patterns.

The academics such as Capron (1999), also attempted to assess the performance of the merger and acquisition activities by conducting the survey of prime stakeholders in merger activities. He further concluded that the available financial data is too gross to allow the separation between the types of pure value-creating mechanism. Moreover, he also argued that more often the objective of the companies is to retain the top management team of the target's firm, whether it's a conglomerate or related merger.

International Prospects of M&A

The emergence of globalisation and increasing trends in international trade fasten the number of local as well as cross-border acquisitions and merger activities. For instance, the cross-border acquisition activities in United States increased to 19% in 1999 from 6% in 1985 (see Seth et al, 2001).

According to the study of Seth et al (2001), the evidence suggests that there are three motives for cross-border acquisitions such as synergy seeking, managerilism and managerial hubris. Moreover, the research tends to show that there is a positive relationship between the level of value creation and reverse internalization, asset sharing, financial sharing and market seeking ( as discussed by Seth et al, 2001).

In addition, there seems to be association between value creation and governance system of bidder's country. For instance, Seth et al (2001) argued that bidding companies from group-oriented governance system like Japan and Germany appear to be engaged in acquisitions and merger activities with higher level of value creation in contrast to bidding firms from market oriented governance system such as United Kingdom.

Further enhancement of research in the area of cross-border merger and acquisition suggests that experience in merger and acquisition activities can be utilized to create value in another country. For example, Gugler et al (2003) compared the data of 15 years and proved that post merger patterns are similar across different countries. Moreover, their evidence also signifies that there are no major differences between domestic and cross-border mergers as well as manufacturing and service sectors around the world.

With the passage of time and in the era of globalization the merger and acquisitions activities are increasing especially in emerging economies. The multinational companies often use the tools of acquisition and mergers to penetrate in new markets and economies particularly in emerging countries such as Central and Eastern Europe (see Milman, 1999).

However, in many countries MNC mergers and acquisitions are seen as threats by government agencies, privatized companies and state enterprises. Therefore, in order to develop a successful alliance the acquisition or merger program should be designed in such as way that creates value for companies as well as the host-country governments (see Rondinelli and Black, 2000).

Lastly, yet the number of merger and acquisitions across border appears to be increasing but it seems difficult to integrate and manage the successful processes. Hence, Inkpen et al (2000) suggested that the companies should critically evaluate the areas of decision making, communication, networking and socialisation, communication and the structure of authority and responsibility before involving in the process of M&A.

People in M&A

Only looking to financial aspects might limit the understanding about the question why M&A activities are so widely used by companies as a tool to grow. Hence, another area focused by academics, such as Karitzki and Brink (2003), is related to merger and acquisitions and people.

Generally, one of the motives for merger activities is to follow the cost-cutting strategies including synergy and target's customers. Often, the employees are laid off in the process of merger and acquisitions and consequently this creates new but conflicting networks of relationships in new companies as suggested by Vermeulen and Barkema (2001). Thus, it affects the success and results in under-performance of merger and acquisition programmes. Therefore, considering the affects of M&A on employee or managers of the potential target firms are of similar importance as financial issues.

Similarly, the research in the area of executive compensation pointed out that prior to acquisition or merger, management of acquiring company receive significant higher packages comparative to the executives of target firms (see Lynch and Perry, 2002). Hence, these issues can lead to turnover and morale issues that ultimately affect the success of anticipated integration from M&A. Furthermore, in extreme circumstances, issues like these emerging from dissimilarities create hurdles to achieve the objective of the original merger and acquisitions. Thus, reconciling the differences is one of the major issues faced by the combined company to create value (as discussed in Lynch and Perry, 2002).

Moreover, successful merger or acquisition depends upon the people in both target and acquiring firms. The attitude and opinion of the employees regarding acquisition or merger can change over the time. Schweiger and DeNisi (1991) conducted the survey of employees and compared the attitudes in pre-acquisition and post-acquisition period. Their results show that attitudes of the employees three months after the announcement of merger changed significantly and turn towards continual negative consequences (see Schweiger and DeNisi, 1991).

Likewise, Covin et al (1996) studied the attitude of 2845 employees from a large manufacturing concern in post merger period. The results show significant differences between the target firm and acquiring company's employees in satisfaction with merger. The employees of acquired company faced high level of dissatisfaction and ultimately felt more stress due to changes introduced after merger. In addition, this stress is aggravated due to the direct competition between target firm and acquiring company. Furthermore, Covin et al (1996) pointed out that factors such as loss of power and status, changes in salary or benefits and lack of managerial direction result in high level of stress and dissatisfaction from merger activities.

Hence, it has been suggested that in addition to financial aspects these types of issues should not be overlooked in order to create value and to develop a successful merger and acquisition programme (see Karitzki and Brink, 2003).

Best Practices in M&A

It is often suggested that acquisitions are predominantly unsuccessful and numerous studies like Aiello and Watkins (2000), confirmed this fact. However, generally the conditions and environment is relevant before judging the results. Furthermore, there is lack of research in answering the question; what would happen if both the companies continued in their own separate way. Therefore, estimating the successfulness of merger or acquisition is a tricky anomaly (as discussed in Chaudhuri and Tabrizi, 1999).

Moreover, the unsuccessful M&A activities are more highlighted in contrast to successful programmes. Ed Libby, the chairman and CEO of AllState stated that when M&As fails they draw more notice despite the fact that lot of other projects fails in business but no one can see them because they remain within internal walls of the companies (cited in Cary, 2000).

As stated earlier, there is no one strategy that fits all kinds of merger and acquisition activities, however systematic approaches such as suggested by Jan Leschly, can help companies to develop a successful plan. Jan Leschly, retired CEO of SmithKline Beecham suggested that they put their people on the boards of different companies by investing small amounts. Once the companies get going then they decide whether to buy it completely or not (cited in Cary, 2000).

Likewise, understanding the various components of merger process is very vital to develop a successful merger or acquisition deal. However, it is very hard to enumerate the components especially when these are integrated with each other. According to Marks and Mirvis (2001), the successfulness of merger and acquisition is highly depended on following factors:

Acquisition Plan
Implementation of this plan
Post-acquisition cooperation between firms after acquisition

Moreover, they collected a number of factors that were mentioned in previous research such as strategic objective, clear selection, search and selection process etc. They also argued that pre-acquisition planning is very important for successful merger and acquisition plan and more prepared the people will more synergies in a combination will result (see Marks and Mirvis, 2001).

Similarly, Aiello and Watkins (2000) suggested that every M&A deal pass through following five stages:
Screening potential deal
Reaching initial agreement
Conducting due diligence
Setting final terms
Achieving closure

They suggested that splitting the merger or acquisition deal in above mentioned stages and approaching them systematically can help companies to create value through business combination (see Aiello and Watkins, 2000).

However, sometimes the reasons for M&A failure could be different from the reasons of other M&A success. Gadish et al (2001) studied the causes of merger and acquisition failure and suggested that poor strategic rationale, sever cultural mismatch, overpayment for acquisition, inadequate integration planning and execution, setting rational and problems in executive leadership and strategic communication are the main factors that lead to the under-performance and sometime failure of any merger or acquisition deal.

Valuations Issues in M&A

The last area of M&A research focused by academics are the valuation of the companies involved in deal. There are several methodologies such as discounted cash flows or P/E multipliers, used by analyst to value the company. However, Hall (2003) suggested three main methods to estimate the value of business. These are comparable companies' method, discounted future earning method or asset model, which can be use to appraise the value of company.

However, application of these models requires careful judgement of analyst and may not be appropriate to apply in all circumstances. For instance, in current economic turmoil application of comparable companies' model on traded firms can skew the valuation of business (see Hall, 2003).

Moreover, additional premium price needs to be paid for most of the merger and acquisition deals. The valuation of the business could be relatively simple if it is stand alone but additional value created due to synergies and closing acquisition cost integrated in the process construct further challenges in estimation (see Gadish et al, 2001). However, there is range of sophisticated techniques available to help in estimation and often the final price is based on weighted average of number of valuations as suggested by Eccles et al, (1999).

Evidence of Post-Acquisition Performance and Value Creation

Many studies such as Dodd (1980) and Firth (1980), have attempted to identify the value creation of corporate acquisitions by examining the stock returns of the acquiring companies. However, empirical evidence suggests mixed results in terms of post acquisitions returns to shareholder of the acquiring firms. Some studies found negative returns to the acquirers (see Malatesta, 1983; Eger, 1983) in contrast to other research, which reported significant abnormal returns for the shareholder of acquiring companies (see Chung and Weston, 1982; Asquith et al, 1983). Particularly the studies of long run performance of acquiring firms provided the evidence of significant abnormal return over the period of one to three years after post acquisition (see Langetieg, 1978). However, contrary to that Agrawal et al (1992) reported the 10 percent loss to acquiring firms in post acquisition period of five years.

The previous research mainly focused to investigate the relationship between types of acquisitions like vertical integration, unrelated acquisitions and related integrations but has not concentrated on the reasons of success. Moreover, many academics have been attracted to the paradigm of corporate acquisition and value creation; however, the results of studies of unrelated and related diversification were mixed (see Lecraw, 1984). For instance, Rumelt (1982) proved that higher profitability is associated with related acquisition comparative to unrelated acquisitions. Similar results has been reported by Christensen and Montgomery (1981) and Varadarajan and Ramanujam (1987).

However, other research like Michel and Shaked (1984) found the evidence that unrelated acquisition outperformed the related acquisition. Likewise, Weston et al (1972) also concluded that unrelated acquisitions performed better than related acquisitions. Furthermore, Luffman and Reed (1984) support this notion by studying the unrelated and related acquisitions activities and reported that firms engaged in unrelated acquisition are in better position to create value in contrast to firms involved in related acquisitions. However, there are some studies such as Grinyer et al, (1990), which did not find any significant difference among various types of acquisition and merger strategies.

In fact, most research was unable to find the exact forces which drive the successful corporate acquisitions modes, as stated earlier; therefore it is difficult to identify the determinants of successful acquisition process. More specifically, empirical evidence, for instance Chattterjee (1986) suggests that horizontal acquisitions outperformed the vertical acquisitions and conglomerates and associated with higher synergies. However, some studies like Lubatkin (1983) proved that vertical acquisitions and conglomerates provided superior performance than horizontal acquisitions.

However, to sum up the previous studies Loughran and Vijh (1997) suggested three typical results from various research studies. Firstly, the stakeholders of target firm gained high abnormal returns from acquisitions activities. Secondly, the shareholders of acquiring firms does not gain abnormal returns or very little from tender offers. Finally, the acquiring company's shareholders gained negative abnormal returns from the merger activities (see Bradley et al, 1983; Kummer and Hoffmeister, 1978; Jensen and Ruback, 1983). In general, evidence from academic research shows that acquisitions and mergers do not create value instead results of acquisitions and mergers are associated with negative returns rather than positive as suggested by Ruback (1988).

Furthermore, these negative abnormal returns are inconsistent with the hypothesis of market efficiency and tend to show that market participant overestimates the anticipated efficiency gains from takeover transactions (see Jensen and Ruback, 1983). In addition, Agrawal et al (1992) suggested three important implications of underperformance findings. Firstly, the hypothesis of capital market efficiency is a very important concept in corporate finance and systematic poor performance from post-merger transaction is inconsistent with this hypothesis. Secondly, they argued that most performance research examines the returns around announcement dates by implicitly assuming that markets are efficient and therefore ignore the examination of post announcement returns. Hence they noted that market inefficiency findings on post announcement basis could be calls into question. Finally, the findings of underperformance might show poor accounting performance of firms after the merger or acquisition transaction. However, there are studies such as Healy et al (1992), which provided opposite results.

Likewise the study by Mercer Management Consulting found that since mid-80s, 57 percent of merger and acquisitions deals, which worth $500 million or more generated poor results over the period of three years after the acquisition transaction comparative to industry average. Further findings of the study were that during 1990s, the success rate of the acquisition transaction was barely 50 percent (p.39, cited in Smith and Hershman, 1997).

Finally, we can assert that acquiring firms underperformed market after the acquisition, as suggested by most research such as Agrawal et al (1992) examined the post merger performance of companies and reported that acquiring companies underperformed by 10% on average in post-acquisition period over the five years. However, they also argued that it is still an unsettled issue in finance literature and it depends upon how the performance is measured.

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