From Good to Great to...
检验吉姆·柯林斯在《从优秀到卓越》中筛选出的11家卓越公司，发现仅1家后续股价表现持续优异，按现代投资组合理论衡量则无一达标，质疑其“卓越”筛选标准的可靠性。
Executive Overview With sales of more than 4.5 million copies, Good to Great by Jim Collins provides an inspiring message about how a few major companies became great. His simple but powerful framework for creating a strategy any organization can use to go from goodness to greatness is certainly compelling. However, was Collins truly able to identify 11 great companies? Or was the list of great companies he generated merely the result of applying an arbitrary screening filter to the list of Fortune 500 companies? To test the durability of his greatness filter, we conducted a financial analysis on each of the 11 companies over subsequent periods. We found that only one of the 11 companies continues to exhibit superior stock market performance according to Collins' measure, and that none do so when measured according to a metric based on modern portfolio theory. We conclude that Collins did not find 11 great companies as defined by the set of parameters he claimed are associated with greatness, or, at least, that greatness is not sustainable.