Zero-Day Options Reveal Deeper Panic Than the VIX Suggests

​The VIX may be spiking, but it’s still not telling the full story of the market’s chaos—especially in the wake of Trump’s tariff shock. For that, traders are watching something even more intense: zero-day options, or 0DTEs.

These ultra-short-term contracts, which expire the same day they’re traded, have exploded in popularity since 2022. Now, amid fresh trade war fears and wild intraday swings, they’re lighting up the derivatives market and signaling volatility far beyond what the VIX captures.

Last week, a one-day volatility measure based on 0DTEs actually eclipsed the VIX for the longest stretch on record, according to Bloomberg. Even as the VIX hit its highest levels since 2020, the single-day spike went further—highlighting how short-term traders are bracing for extreme, moment-to-moment swings.

“The VIX doesn’t tell the whole story anymore,” said UBS’s Max Grinacoff. “If you’re not tracking intraday moves via 0DTE activity, you’re missing the real-time fear.”

Blame the tariffs. Since Trump’s April 2 announcement, market liquidity has thinned, bots have been jumpy, and every headline hits harder. Some critics argue that 0DTEs are making it worse—magnifying every twitch in sentiment. Even Bill Ackman has raised concerns about their potential to destabilize markets.

Still, not everyone sees the contracts as the villain. Cboe’s Mandy Xu says the dominant driver of volatility is the tariff policy itself, not the tools traders use to hedge. In fact, she points out that 0DTE trading remains balanced between bullish and bearish bets, even during the market’s most chaotic sessions.

But academics like Jonathan Brogaard disagree. His research shows that since 0DTEs took off, intraday volatility has jumped nearly 25%. With massive sums flowing through these fast-moving bets, the effect on markets—especially during panic moments—is undeniable.

​Bottom line: Trump’s trade war may be the match, but 0DTEs are the fuel. And together, they’re rewriting how markets react, trade, and panic in real time.