Longevity leaderboard

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When Microsoft named Satya Nadella as its new boss this week, it ended Steve Ballmer's reign as one of the longest-serving CEOs of a tech company. During Ballmer's 14-year term at the helm, total annualised returns stood at just 0.4 per cent for the software giant's stock. Here's a look at how Ballmer's tenure compares with those of other tech chiefs.