Equities: S&P 500 Back to the Gap

It is almost uncanny how many times a stock or index makes a gap up and then comes back to fill the gap before resuming the move. In this case S&P 1073 or thereabouts.
On the other hand, I knew an old-timer who spent much of the eighties waiting for the Dow Joneses to fill a gap in the high 500's that dated from 1974.

Here's the five day S&P chart from BigCharts:

The gap is the space between the close on Tuesday the 13th at 1,073.19 and the open on Wednesday the 14th at 1,078.68.