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- 82% of Opening Gaps Fill Within 2.5 Hours.
82% of Opening Gaps Fill Within 2.5 Hours.
Here Is What That Means for Your Trades.

181,000 contracts traded in the S&P futures seven minutes before the cash open this morning.
That number told me everything I needed to know before the bell rang.
The news over the weekend was significant. Geopolitical tensions escalating. Iran headlines hitting again. If you were reading the pre-market tape you would have thought the open was going to be volatile and directional.
On a day when something genuine is happening in this market, you see 250,000 contracts minimum before the open. When things are really moving, you get 400,000 to 500,000. 181,000 contracts with that kind of weekend news is the market telling you the pre-market story is noise.
Here is what the data says about why that matters.
Five years of E-mini futures data from 2020 through 2025 shows that 82 percent of opening gaps fill within the first two and a half hours of the regular session.
The institutional order flow that arrives at the cash open determines intraday direction.
What happened overnight is almost always irrelevant by 10 am.
I watched it play out in real time today.
The financials were completely flat in pre-market with no read whatsoever. Bell rang and they ran. Microsoft dropped 5 to 7 percent pre-market on the OpenAI news. Cash open hit, order flow came in, and the stock found its real level within minutes.
In both cases the pre-market move was a distraction. The order flow at the bell was the only signal worth following.
Most traders are also watching the wrong volatility gauge every morning.
The VIX is a 30-day calculation. It is slow, it is lagging, and it is not a tradeable product. The volatility futures are what the institutional money is actually pricing.
This morning the VIX had a bid under it signaling fear while the volatility futures were unchanged and slightly lower. The volatility futures were the correct read on where this market was actually going.
Your framework going forward.
Sit on your hands for the first 10 to 15 minutes after the open. Let the institutional order flow establish direction. Then trade what you see, not what the pre-market suggested.
That same principle applies to Wednesday's earnings session.
The pre-market reactions when Microsoft, Alphabet, Amazon, and Meta report will tell you one story.
The institutional positioning that has been building in those names over the last two to three weeks is the real one.
Brandon Chapman reads that positioning through block trades and he is going live at 2 PM ET today to walk through exactly what he is seeing before the biggest earnings night of the quarter.
To your success,
Don Kaufman