After the Fukushima earthquake...which is somewhat more serious reason to gap down than AAPL unit-volume miss...
the Tokio market tried to close the gap 3 times :
1 week later, 0.06 miss
8 Weeks later, 0.11miss
21 weeks later. The third attempt was successful.
Fukushima gap meant a fundamental damage to lose 1.0% of Japan GDP.
AAPL volume miss meant ...what?
AAPL gap will be closed next week, most probably. If not, wait 8 weeks.
Buy on Monday or Tuesday, for a pretty safe 10% upside. And what if you have to wait 21 weeks?