I assume. But given that it got into autoexercise range during the last minute of trading on Friday probably meant (1) a lot of unexpected exercises (2) a lot of unexpected margin calls on Monday morning (3) downward pressure at the open on Monday as some stock was liquidated to relieve the margin calls. IIRC, GOOG opened late that Monday morning; maybe there was a trade imbalance. I don't have the means to do this, but maybe someone can do a screen, looking back over the last couple months, for optionable, high-beta stocks that were barely in autoexercise range upon expiration and see what tends to happen on the following Monday.