MicroStrategy Incorporated closed at $132.25, rising 4.81%.

Despite the stock’s gain, the largest options trade of the day was an $11.65 million deep in-the-money put purchase, casting a bearish shadow over the session. A modest bull call spread appeared as a secondary flow, but its $220 thousand net debit was dwarfed by the dominant downside positioning, suggesting institutional traders leaned bearish even as shares advanced.

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Options Indicators

MSTR’s implied volatility is 73.05%, while its IV percentile is just 13.15%, which indicates that although the absolute level of implied volatility remains high, it sits near the low end of its own historical range. In other words, current option pricing is relatively cheap compared with where MSTR options have typically traded, and the IV/HV ratio of 0.76 further suggests implied volatility is running below realized volatility rather than at a premium.

The Call/Put volume ratio is 1.51.

Large Trades

A PUT buy worth $11.65 million was the standout large trade, with 2,435 contracts purchased on the September 18, 2026 $180.00 put. With MSTR referenced at $132.25, this strike is deeply in the money, making the position an outright bearish bet with substantial intrinsic value and downside sensitivity. The aggressive put buying suggests a trader willing to pay significant premium for protection or for direct participation in further weakness, and its scale made it the dominant risk expression in the day’s large-flow activity.

A bullish call spread with a net debit of $220 thousand was the other displayed large trade, built by buying 1,250 September 25, 2026 $135.00 calls and selling 1,250 September 25, 2026 $141.00 calls. Both legs were out of the money versus the $132.25 stock reference, so the structure reflects a defined-risk upside bet targeting a move into the $135.00-$141.00 zone by expiration. As a bull call spread, it is a premium-paid directional strategy rather than a volatility sale, showing measured bullish intent but with gains capped at the short-call strike.

Overall, the bulk-order flow points to a bearish near-term tone for MSTR. Although there were pockets of upside positioning through bull call spreads and some directional call buying, the session was dominated by much larger downside-oriented activity, led by the oversized in-the-money put purchase and reinforced by the aggregate imbalance in bearish premium. Taken together, the large-trade profile suggests institutional traders were more focused on downside exposure and protection than on chasing upside, leaving the broader sentiment clearly negative.

Strategy Reference

For traders unwilling to post the margin required for a naked put, a bear put spread such as buying the September 2026 $130.00 put and selling the $100.00 put can express a controlled bearish view with defined risk, while those seeking income may consider selling a far out-of-the-money call above $180.00 given the low IV percentile and bearish large-flow backdrop.