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Look, I need to clear something up because I keep seeing traders make the same mistake with 0DTE options.
A lot of people assume bull call spreads are the smarter play because they reduce cost basis and cap risk. In slower-moving environments, that can absolutely make sense.
But for same-day trading, especially when you’re trying to capture fast directional momentum, the math changes completely.
You’re often capping your upside for almost no meaningful benefit.
The issue comes down to time decay. If you’re entering a trade at 10 a.m. ET and planning to exit that same afternoon, the short call you’re selling isn’t decaying fast enough to materially help the position.
There’s simply not enough premium left in the contract for the short leg to do much work for you.
Meanwhile, you’ve now limited the upside on the exact kind of explosive move 0DTE traders are trying to capture.
The Economics of 0DTE Are Different
That’s the part many traders miss.
These contracts are already cheap. Even contracts a couple strikes out of the money can sometimes trade for around $1 to $1.50.
When the premium is already compressed, selling another leg against yourself often doesn’t improve the structure enough to justify the tradeoff.
You’re reducing your maximum gain while barely improving the entry cost.
Take some of the recent action in Nvidia (NVDA). We’ve seen enormous activity in 1DTE calls with traders piling into cheap directional exposure ahead of momentum bursts.
Some contracts have traded for under 50 cents while still delivering significant percentage swings intraday.
In that kind of environment, outright calls simply offer more flexibility and more reward potential than a capped spread structure.
That said, one thing still matters: flow confirmation.
Heavy retail call buying by itself doesn’t automatically mean institutions agree with the move.
Sometimes you’ll see aggressive retail speculation while institutional flow stays relatively quiet.
That divergence matters because it can tell you whether momentum is being broadly supported or driven primarily by short-term speculation.
Better Structures for Fast Intraday Trading
If you’re trading 0DTE directionally, there are usually cleaner ways to structure the trade.
Outright Calls
For pure momentum trades, outright calls generally make more sense.
You’re not paying much time premium anyway, so you get full exposure to the move without a short leg limiting your upside. If the stock accelerates quickly, you participate fully in the delta expansion instead of watching gains flatten because your short strike is working against you.
That’s especially important in fast-moving intraday environments where one sharp push can make the entire trade.
Tight Premium-Selling Spreads
If you want defined risk with theta working in your favor, tight credit spreads make more sense structurally.
Something like a narrow bull put spread can decay rapidly during the session if price stays above support. In that setup, time decay is finally helping you instead of doing almost nothing for your position.
That’s a much cleaner use of spreads in a same-day environment.
The Bottom Line
For 0DTE directional trading, simplicity often wins.
Either take the outright directional exposure and let the move work, or structure the trade so theta genuinely benefits you through premium selling.
But using bull call spreads on ultra-short-duration momentum trades often creates a situation where you’re limiting the exact payoff profile that makes 0DTE attractive in the first place.
In fast-moving markets, flexibility and clean exposure matter a lot more than shaving a little off the entry cost.
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Geof Smith
Geof Smith Trading
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*This is for informational and educational purposes only. There is inherent risk in trading, so trade at your own risk.
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