Google (GOOG -2%) underperformed the tech sector today on strong volume. Apple's (NASDAQ:AAPL)...

Google (GOOG -2%) underperformed the tech sector today on strong volume. Apple's (NASDAQ:AAPL) results, and the share gains they imply for iOS relative to Android, could be one reason why, though Google generates plenty of ad revenue from both platforms. Another factor could be the strong backlash to privacy changes announced yesterday, the second major controversy Google has ignited this month (previously).