Monday, June 21, 2010

A Large Gap Up From A High Level

Looks like there is going to be a sizable gap up this morning. I've shown before how large gaps up from 10 and 20-day highs in the SPY often lead to an intraday selloff. While the SPX closed at a 20-day high on Friday, the SPY and the futures were down slightly.

SPY closed down a little rather than up a little because it went ex-div. Rather than looking at 10-day highs I looked at closes in the top 10% of the 10-day range. A slightly different twist. (Note that the SPY missed qualifying for this by a few pennies as well thanks to the dividend. Still, I felt the current situation represented the spirit of the setup.)

Rather than a stats table, I've listed below all 11 instances since 2003.



10 of 11 instances saw declines from open to close. The far right column is even more interesting. In only 1 case did the max intraday runup from the opening price exceed 1% (3/16/09). In contrast, 9 of 11 exceeded a 1% pullback, and all 11 exceeded a 0.8% pullback. This all suggests to me that intraday risk/reward is skewed to the downside today.

3 comments:

Daniel said...

Very clear, very definitive, very helpful.

Thanks for posts like this.

procol said...

Interesting study. Too bad I'm reading this at 10:50pm.

Sharpe Trader said...

Nice call, Rob