I've been following QID and SDS, ultrashort ETF's for nasdaq 100 and S&P 500. They did not perform as well today as they should have, and I noticed that there was about a 0.5% jump in both of these at a time when there was no correlating jump in the indexes that they (inversely) track, right at the beginning of the day. Here are two day one-minute charts.
Over two days, the nasdaq has fallen about 0.6%, but the QID is not anywhere near +1.2%, in fact it's down. There's a funny blip there between yesterday and today, but what really killed the short term performance of QID is that the nasdaq dropped about 0.25% right at the open, and QID just picked up from where it finished yesterday, which was down 0.75% while the nasdaq was flat for the day. SO, my QID dropped when the nasdaq was flat, and way underperformed what it's supposed to do today with the nasdaq down.

Likewise, over two days, the S&P500 is down about 0.5%, but SDS is not anywhere near +1.0%.

Of course, the prospectus says that the use of derivatives, increased volatility, blah, blah, blah, => we don't guarantee anything. But still, I'm a little disappointed that a pretty bad day in the markets doesn't get me the gains it should in these ETF's.
I wouldn't pay this much attention to them if I didn't have a position, so it's been an interesting experiment in inverse market timing, but I probably won't be doing this again.

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