Bell Canada, a publicly listed Canadian telecom firm, receives takeover offers from LBO (leveraged buyout) firms. A strategic acquirer, Telus, is also potentially interested. The case describes the synergies and efficiency gains available to both types of acquirer, which allows for a discussion about the respective contributions that a financial buyer (PE/LBO firm) and a strategic acquirer could bring to the target firm.

For years, people have bemoaned executives' zealous focus on short-term results, which often leads CEOs to make moves that undermine their firms' long-term prospects and, some say, act irresponsibly. But all the talk won't change anything if the business world doesn't adopt a new way of measuring performance. Three professors from France's Insead believe they have the answer: an innovative scorecard that evaluates CEOs on the basis of the results they delivered over their entire tenures in office. It incorporates three metrics: industry-adjusted shareholder returns, country-adjusted shareholder returns, and increase in market capitalization over that time frame. Using this scorecard, the authors have studied and objectively ranked the performance of thousands of CEOs of major corporations around the world. In this issue, we reveal who made it into the top 100. This is the second installment of the ranking, which we published for the first time three years ago. Since then, the authors have expanded the group of CEOs studied, making it even more global. And, recognizing the growing sentiment that great financial performance is no longer enough, they also looked at social and environmental ratings to see which of the top CEOs also did well on those metrics. Accompanying this year's list is an interview with Jeff Bezos, the CEO of Amazon, whose well-known focus on the long term has served his company extremely well--earning him the #2 spot in the ranking.

A lot of people have blamed short-term thinking for causing our current economic troubles, which has set off a debate about what time window we should use to assess a CEO's performance. Today boards of directors, senior managers, and investors intensely want to know how CEOs handle the ups and downs of running businesses over an extended period. Many executive compensation plans define the "long term" as a three-year horizon, but the real test of a CEO's leadership has to be how the company does over his or her full tenure. This article contains a list of the 50 CEOs of large public companies who performed best over their entire time in office-or, for those still in the job, up until September 30, 2009. To compile the results, the authors collected data on close to 2,000 CEOs worldwide. They asked, Who had led firms that, on the basis of stock returns, outperformed other firms in the same country and industry? The ranking combines three measures: country-adjusted return, industry-adjusted return, and change in market capitalization during tenure. While it may come as no shock that Steve Jobs of Apple tops the list, the ranking does contains a few surprises. You'll see some relatively unknown faces at the top. The inverse is also true: Some obvious candidates based on reputation don't make the top 50. The authors' analysis of the factors that increased the likelihood that an executive would place high in the ranking turned up a few more surprises. Although one might expect context to have a big effect, they found a wide diversity of countries and industries represented in the top performers. The CEO's background did matter, however, as did the situation left behind by his or her predecessor.