Gap Days: My Playbook for Gap Up and Gap Down Opens

Gap days separate the prepared from the emotional.

$SPY opens 1% higher or lower and everyone has an opinion in the first 30 seconds. Half the room is chasing, the other half is calling the top or bottom. I do neither. I have a playbook, and the playbook starts with doing nothing.

A gap is just a bigger version of the overnight information the market has to process. The same rules apply, only louder.

The first rule: never trade the first candle

The first 5-minute candle on a gap day is pure emotion. Gap up and retail is smashing market buy. Gap down and everyone is panic selling the low.

That candle traps more traders than any other candle of the day. The chasers of the gap-up open become the liquidity for the fade. The panic sellers of the gap-down open become the fuel for the bounce.

I let the first candle print and I watch who it traps. That information is worth more than any entry I could force in the first 60 seconds.

Gap fill versus gap and go

There are two types of gap days, and the first 30 minutes tell me which one I am trading.

The gap fill. Price opens higher, can't hold it, and starts fading back toward yesterday's close. The tell is weak closes: candles closing off their highs, no acceptance above the gap zone. On these days I wait for the sweep of the opening highs, then short the fade toward the fill. The gap fill is one of the most reliable intraday moves because every chaser from the open is now trapped and needs out.

The gap and go. Price opens higher and holds it. Candles close strong, pullbacks are shallow, and the gap zone acts as support on every test. On these days I do not short the fill. I wait for the pullback to the gap zone or the opening range, watch for the sweep of the micro lows, and join the trend long. Fighting a gap and go is how you get run over by 10 AM.

The key is that I don't decide which one it is at 9:31. I let the first 30 minutes show me. Weak closes mean fill. Strong closes mean go.

Waiting for the sweep after the gap

Whatever the day type, my entry still comes from the same place: the sweep.

On a gap fill day, I wait for price to push one more time into the opening highs, sweep them, trap the last buyers, and then I short the reversal. The sweep is what turns a fade idea into a trade.

On a gap and go day, I wait for the pullback to sweep the micro lows or the gap zone, trap the late shorts, and then I buy the continuation. Same sequence, same model, just pointed with the trend.

The gap doesn't change my model. It just makes the liquidity pools bigger and the moves faster. Bigger pools, same fishing technique.

Sizing down on gap days

Gap days are volatile, and volatility cuts both ways. My setups work the same, but the candles are bigger and the stops are wider.

So I size down. Same model, smaller position. A wider stop on a smaller position keeps my dollar risk identical, and it keeps me calm enough to actually follow the plan when price is moving fast.

Traders blow up on gap days because they trade their normal size into double the volatility. The market didn't get more generous. It got more dangerous. Respect it.

Want my gap day plan before the bell? I post the gap read and the levels I am watching every morning inside the free Bulls Corner Discord. Get in free here, just drop your email and you're inside.

The mistakes traders make on gap days

Chasing the open. The worst fill of the day is usually in the first two minutes. If you are entering there, you are the liquidity.

Calling the fill too early. Shorting a gap and go at 9:35 because "gaps always fill" is how you take the maximum loss. Let the market prove the fill first.

Fighting the trend after confirmation. Once the day declares itself, go with it. The traders who keep fading a gap and go at 11 AM are trading their opinion, not the tape.

Normal size in abnormal volatility. Gap days need smaller size. Every time. No exceptions.

I trade $SPY gap days with this playbook every time they show up. The free Discord is where it happens, join free.

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Let the gap declare itself.

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Free download: Gap days are trend days in disguise, and trend days start with structure. Grab the Upside PSS Model guide free here.

FAQ

Should you trade the first candle on a gap day?

No. The first 5-minute candle on a gap day is pure emotion and traps more traders than any other candle. I let it print and watch who it traps. That information is worth more than any entry forced in the first 60 seconds.

How do you tell a gap fill from a gap and go?

Watch the first 30 minutes. Weak closes off the highs with no acceptance above the gap zone mean the gap will likely fill. Strong closes, shallow pullbacks, and the gap zone holding as support mean gap and go. I don't decide at 9:31, I let the tape declare it.

What is your entry on gap days?

The same as every day: the sweep. On gap fill days I wait for the sweep of the opening highs then short the reversal. On gap and go days I wait for the pullback to sweep the micro lows then buy the continuation. The gap makes the pools bigger, the model stays the same.

Should you change position size on gap days?

Yes, size down. Gap days bring double the volatility, bigger candles, and wider stops. Smaller size with a wider stop keeps dollar risk identical and keeps you calm enough to follow the plan when price moves fast.

Risk note: everything on this blog is educational content from my own trading experience, not financial advice. Trading options involves substantial risk of loss.