His record has been mixed -- he's managed to keep employees happy and stop the brain drain, has overseen the launch of Google's most successful social product yet (Google+) and redesigns of key products like YouTube, and made a big bold bet on mobile by spending $12.5 billion on Motorola.
But the big question for investors is: how has the stock done since he's taken over?
It's up about 9% as of this morning.
Here's the chart:
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