Seems like most of the time the opposite happens to me. On Friday I decided to initiate the transfer of a $7000 chunk of savings to Vanguard, but it doesn't buy until the end of the next business day. And of course, to my dismay, I see the stocks surge 1% today, right before my funds will be purchased after close. *face palm*
And then naturally, tomorrow they'll be back down and I will have bought at the 'peak'. I swear most of my larger investments happen this way...