Why is Zebra Technologies Corporation (ZBRA) stock moving?

I found little recent company-specific news, so this view rests mostly on price action and the valuation snapshot. ZBRA traded in a range of roughly $369–$391 from mid-October. It then dropped on Oct 30, when it fell to an intraday low of $340.31 and closed at $361.26, about 4% below the prior close. Volume was roughly double the recent norm. The next session closed flat at $361.13 on similarly heavy volume, so buyers have not yet recovered the lost ground. The shares are well above the 52-week low of about $199 and not far below the high of about $386. That means the stock was priced for good execution going into earnings. Analyst consensus is Buy with a target near $411, and a forward P/E of about 18 looks reasonable against a trailing P/E of about 35. Earnings were due on Nov 3, which is the key near-term catalyst. The cause of the Oct 30 selloff isn't clear from the information available. The beta of about 1.58 points to a large move in either direction after the report. Support sits near $340–$358 and resistance near $377–$391.