SPDR S&P 500 ETF Trust ended the latest session at $757.83, a 0.60% decrease.

Large displayed options activity revealed a clear institutional split, with a dominant $9.72 million bear put spread targeting the 750–730 zone into September 2026, while a $3.74 million bull put spread collected premium on the 760–755 strike band. Despite the bullish credit collection, the overall large-trade flow leaned bearish, as substantial put buying and debit put spreads showed bigger players were still willing to pay for downside protection into next year.

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Options Indicators

SPY’s implied volatility is 18.21%, and with an IV percentile of 51.39%, current volatility sits in a neutral range rather than at an extreme. That suggests options are neither notably cheap nor especially expensive relative to their own recent history, even though the IV/HV ratio of 2.19 indicates implied volatility is running well above realized volatility and the market is embedding a meaningful premium for forward uncertainty.

The Call/Put volume ratio is 0.75.

Large Trades

A bear put spread with a net debit of $9.72 million stood out as one of the largest displayed trades, pairing a purchase of 32,500 Sep. 18, 2026 750.0 puts with a sale of 32,500 Sep. 18, 2026 730.0 puts. With SPY referenced at 757.83, both strikes were out of the money at execution, making this a defined-risk bearish structure that pays for downside exposure while partially offsetting premium through the lower-strike short put. The trader is clearly positioning for a meaningful decline into next year, using the spread to express a directional bearish view with controlled cost rather than buying naked puts outright.

A bull put spread with a net credit of $3.74 million was the other key displayed block, consisting of the sale of 20,000 Sep. 11, 2026 760.0 puts and the purchase of 20,000 Sep. 11, 2026 755.0 puts. Relative to the 757.83 spot reference, the short 760.0 put was in the money while the long 755.0 put was out of the money, creating a premium-collecting bullish put spread that benefits if SPY holds firm or recovers above the short strike by expiration. This is a defined-risk income-style bullish stance, suggesting confidence that downside will remain limited over that horizon while retaining protection beneath 755.0.

Overall, the large-trade flow leans bearish. Although there was meaningful bullish premium collection through the bull put spread and several other put-selling structures in the broader tape, the more prominent downside-seeking activity included substantial put buying and debit put spreads, showing that larger players were still willing to pay up for protection or for a directional decline. The balance of block activity therefore points to cautious-to-negative institutional sentiment, with traders still leaning toward downside risk even as some participants attempted to monetize elevated premium through defined-risk bullish spreads.

Strategy Reference

For a low assignment probability on the short side, selling the September 2026 700 put offers a further out-of-the-money buffer while still capturing elevated premium, though traders bearish on SPY may prefer the defined-risk 750/730 bear put spread already highlighted to cap loss exposure without posting excessive margin.