🚨 I’ll be live at 3:30 p.m. ET with Nate Tucci🚨
We’ll do a deep dive into earnings with some BIG names on deck, I have some spread ideas, we’ll see if I can keep pinning this market at the close and more [tap to join us for Closing Playbook]!
There’s a fundamental shift happening in the market that’s flying under the radar for most traders. While everyone’s busy analyzing earnings reports and Fed commentary, a different force has quietly taken control of day-to-day price action in the S&P 500.
The driver is 0DTE options — same-day expiration contracts that have rapidly evolved from a niche product into the most influential element in the market. These options now carry so much weight that they can control the outcome of the underlying S&P 500 on roughly four out of every five trading days.
To understand why, you have to recognize how much the structure of daily trading has changed.
Before the pandemic, 0DTE options made up less than 20% of total daily transactions. By 2021 that number doubled, and by 2023 it doubled again.
Today they account for more than 60% of all options trading volume. This explosive growth isn’t just a statistic — it’s a complete reshaping of how the market moves.
This surge in activity means the tail is now wagging the dog. The options market isn’t reacting to S&P 500 movement anymore — it’s shaping it. If you know how to read where that flow is concentrated, you can anticipate where the index is likely to close with surprising accuracy.
The Numbers That Make This Possible
The scale behind this shift is massive. The average daily volume of S&P 500 options sits around 4.8 million contracts. When converted to shares, that’s about $3.5 trillion in daily notional value capable of influencing the underlying index.
All this flow filters through dealers, and their response is what creates the gravitational pull toward specific price levels. The key concept here is dealer inventory risk — the constant effort by dealers to hedge their exposure as traders pile into 0DTE contracts.
As positions accumulate, dealers must dynamically hedge in real time, often pushing the index toward the most heavily traded strike.
That hedging pressure is what makes 0DTE volume so powerful. It helps dictate intraday price movement and frequently pulls the S&P 500 toward a narrow closing range.
I’ve seen this play out repeatedly…
On Friday I projected the closing price to land within a few cents of a particular strike based entirely on volume concentration, and the index closed within four pennies of that level.
When you can identify the strike with the most weight, you can often pinpoint where the market wants to finish long before the closing bell.
Why This Changes Everything
The CBOE didn’t just launch a new product when it introduced daily expirations — it accidentally rewired the core mechanics of price discovery. Most traders still rely on old assumptions about what moves markets, but those assumptions break down when same-day contracts dominate the flow.
This new dynamic means you can see where the market wants to go before it gets there. It’s not about prediction or guesswork. It’s about understanding which force has the most control on any given day, and right now, 0DTE options sit at the center of that control.
The rise of this volume isn’t slowing down. In fact, it’s only going to increase after the SEC has done away with the pattern day trading rule that requires you to have $25K in your account to make more than three day trades in a rolling five-day period.
And the traders who learn to interpret it will have a meaningful edge in navigating daily price action. Those who ignore it will continue trading a market that no longer exists.
Kane Shieh
Kane Shieh Trading
Follow along and join the conversation for real-time analysis, trade ideas, market insights and more!
Important Note: No one from The TradingPub team or Kane Shieh Trading will ever contact you directly on Telegram.
*This is for informational and educational purposes only. There is inherent risk in trading, so trade at your own risk.
P.S. The Bullseye Effect In the S&P 500 Is Changing Everything!
I recently went on camera with former hedge fund manager Roger Scott to expose a stunning discovery on the S&P 500…
Tipping off some of the most lucrative end-of-day trades market-wide!
Fair warning: You’re in for a stunner!
