SPDR S&P 500 ETF Trust ended the session at $757.39, a 0.46% decrease.

The options tape showed significant engagement in longer-dated credit spreads, with a $11.33 million bull put spread standing out as the largest displayed trade and a $9.60 million bear call spread in the December 2026 expiry adding an upside cap. The combined flow suggests traders are positioning for a stable-to-modestly-bullish environment while actively selling premium on both sides of the range.

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Options Indicators

SPY’s implied volatility is 17.33%, and with an IV percentile of 41.83%, current volatility sits in a neutral range rather than at an extreme. At the same time, the IV/HV ratio of 1.99 shows implied volatility is running well above historical volatility, suggesting options carry a noticeable premium relative to realized movement, but not at levels that would classify the overall pricing environment as outright expensive.

The Call/Put volume ratio is 0.89.

Large Trades

A bullish bull put spread with a net credit of $11.33 million was the largest displayed trade, built by selling 25,000 Sep. 18, 2026 $760.00 puts and buying 25,000 Sep. 18, 2026 $745.00 puts. With SPY referenced at $757.39, the short $760.00 put was in the money while the long $745.00 put was out of the money, creating a classic put credit spread that profits if SPY holds above the short strike or at least avoids a deeper decline. The net credit structure points to premium collection with a moderately bullish stance, suggesting the trader was willing to absorb limited downside exposure in exchange for upfront income while defining risk through the lower-strike long put.

A bearish bear call spread collecting a net credit of $9.60 million was the second displayed trade, established by selling 20,000 Dec. 18, 2026 $800.00 calls and buying 20,000 Dec. 18, 2026 $830.00 calls. Both call strikes were out of the money versus the $757.39 spot reference, making this an upside cap trade that benefits if SPY stays below $800.00 into expiration. As a call credit spread, it reflects premium collection tied to a directional bet that upside will remain contained rather than collapse outright, with the purchased $830.00 call limiting risk above the short strike.

Overall, the large-trade flow leans modestly bullish. That conclusion is supported by the biggest displayed position being a sizable bull put spread and by the broader block activity showing repeated put selling and credit-taking structures that favor stability or gradual upside. Even though the bear call spread introduces a meaningful bearish or upside-capping element, the overall pattern still points to traders being more comfortable harvesting premium on downside support than aggressively positioning for a major selloff, implying a market view of resilience with gains likely capped rather than explosive.

Strategy Reference

For a conservative bullish posture with low assignment probability, a trader could consider selling a short-dated put spread below the $730.00 support zone, such as the $725.00/$720.00 put spread, to collect premium while keeping the short strike well away from current price action.