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To function best, a "free market" requires the support of institutions. Without laws that provide for the enforcement of contracts, people are less likely to engage in trade, and beneficial exchanges go unrealized. Without a means to protect intellectual property, inventors fear to reveal their ideas and technological progress is suppressed.
Katharina Lewellen and her colleagues find that managers are effective at identifying mispricing of their own securities and are willing to exploit it by selling or buying securities using the corporate account.
Electronic medical records are in the news, with President Obama calling for the medical records of every American to be digitized by 2014, and the stimulus package providing $19 billion to make it happen.
Forty years ago, economist William Sharpe rattled Wall Street when he balanced risks and rewards mathematically. At first seen as heretical and later as “commanding,” his capital asset pricing model (CAPM) earned him the Nobel prize in 1990. Succeeding generations of distinguished scholars have continued to tweak the model and debate it, among them Tuck Professor Jonathan Lewellen.
Why are some firms more successful than others? How do firms differ and why does it matter? In strategy research, the issue of heterogeneity among firms is critical. If all firms were the same, and they all operated in a similar business context, they would all be equally successful. Since this isn't true, then either the firms themselves have to be different or the business context in which they operate must be.
Richard D’Aveni and former Tuck professor Koen Pauwels have come up with a new method to uncover the nature and structural changes of competition in fast-changing markets.
Kusum Ailawadi has run the numbers—lots of numbers—and discovered that the best defense is fine-tuned for individual stores and categories.