More than four million S&P 500 index call options traded on Cboe Global Markets this week, a single-day record that topped the previous high set in May by 10%, according to Bull Theory. The surge in call buying coincided with the S&P 500 crossing 7,700 for the first time in its history.
Roughly 2.4 million of those trades were zero-day-to-expiry contracts, itself a record, according to Benzinga's reporting on the exchange data. Traders piling into short-dated, leveraged upside bets rather than outright equity purchases suggests much of the rally's marginal buying pressure is coming from options markets rather than the cash market alone.
A Volatility Paradox
What makes the move unusual is what happened to volatility at the same time. The VIX, Wall Street's so-called fear gauge, rose 4.0% to 16.50 even as the S&P 500 notched a fresh record — a disconnect where a rallying market and a rising fear gauge typically don't move together. That pattern is widely attributed to the sheer scale of call buying itself: as dealers who sell those calls hedge their exposure by buying the underlying index, it can mechanically push both the index and options-implied volatility higher in tandem.
Leverage Underpinning the Rally
The record options activity feeds a broader concern flagged around the same trading session: that the current leg of the rally is being disproportionately driven by borrowed money and leveraged positioning rather than organic buying. Options give traders outsized exposure for a fraction of the capital required to buy shares outright, meaning a comparatively small pool of premium can move a large notional amount of index exposure — a dynamic that amplifies moves in both directions if sentiment reverses.
Related: Long Dollar Bets Hit $48 Billion, the Most Crowded Since 2015
Crowded Positioning Is a Recurring Theme
The options record adds to a string of recent data points showing crowded, leverage-heavy positioning across markets — from record equity call buying to similarly stretched currency bets elsewhere. Strategists tracking options flow will be watching whether dealer hedging continues to reinforce the rally as call volumes stay elevated, or whether a pullback in the underlying index triggers a faster unwind given how much of the recent move has been amplified through derivatives rather than direct stock buying.
