State Street SPDR S&P 500 ETF Trust (SPY) Options Greeks
Options Greeks measure sensitivity to various factors: Delta (price), Gamma (delta change), Theta (time decay), and Vega (volatility). They are essential for risk management and position sizing.
State Street SPDR S&P 500 ETF Trust (SPY) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $765.22B, listed on AMEX, carrying a beta of 1.00 to the broader market. The State Street SPDR S&P 500 ETF Trust seeks to provide investment results that, before expenses, correspond generally to the price and yield performance of the S&P 500 Index (the “Index”)The S&P 500 Index is a diversified large cap U. public since 1993-01-29.
Snapshot as of May 18, 2026.
- Spot Price
- $737.84
- Net Gamma
- -$4.54B
- Net Delta
- -$78.26B
- Net Vega
- -$1.01B
- ATM IV
- 15.5%
- Gamma Concentration
- 0.02
As of May 18, 2026, State Street SPDR S&P 500 ETF Trust (SPY) aggregate Greeks are net delta -$78.26B, net gamma -$4.54B, net vega -$1.01B, ATM IV 15.5%. Gamma concentration is 0.02: gamma is more dispersed, reducing any single-strike pinning force. Delta measures directional exposure, gamma measures the rate of delta change, and vega measures sensitivity to implied volatility. Net aggregate Greeks summarize the total dealer book across all strikes and expirations.
How SPY options greeks Data Feeds Strategy Selection
Strategy selection on State Street SPDR S&P 500 ETF Trust options does not derive from any single metric in isolation. The options greeks view above sits inside a broader read: ATM IV currently sits at 15.5% and dealer gamma exposure is negative, so dealer hedging amplifies directional moves. Combine the options greeks data here with the volatility-skew surface, dealer-gamma exposure, max-pain level, and upcoming-events calendar to build a positioning thesis. Risk-defined structures (credit spreads, debit spreads, iron condors) are usually safer than naked positions while the regime is uncertain; the data on this page anchors the inputs but does not by itself constitute a trade thesis.
How to read the SPY Greeks profile
The chart above shows per-strike dealer-Greek exposures aggregated across calls and puts for the front expiration. Current net dealer gamma is -$4.54B - a negative (momentum-amplifying) hedging regime. Net dealer delta of -$78.26B indicates short-delta dealer book - dealers are net short the underlying. Net vega of -$1.01B measures dealer P&L sensitivity to IV shifts - a 1-point IV move shifts book value by approximately $1.01B.
SPY Greeks regime and dealer hedging
Aggregate dealer Greeks compress 4 sensitivities (delta, gamma, theta, vega) into a single read on hedging behavior. In the current negative-gamma regime, dealer hedging is structurally momentum-amplifying: dealers buy rallies and sell dips, widening intraday ranges. This is the mechanical basis for vol-of-vol episodes where a small initial move snowballs. Gamma decays as expiration approaches; near-dated Greek exposures dominate the hedging flow.
Using SPY Greeks data for strategy selection
The Greeks profile is the input to most quantitative options strategies. Premium-selling structures (covered calls, iron condors, cash-secured puts) are negative-gamma, positive-theta, negative-vega - they pay you for being patient about realized volatility but get hit when realized exceeds implied. Premium-buying structures (long calls, long puts, long straddles, ratio backspreads) are positive-gamma, negative-theta, positive-vega - they pay you when realized exceeds implied but bleed time decay otherwise. With SPY IV rank at 28.6%, premium-buying has structural tailwind from cheap implied; pair with a directional thesis or event catalyst. Combine the regime read with the Greeks decomposition on this page to size structures correctly.
Learn how options Greeks is reported and how to read the data →
SPY largest gamma exposure contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $745.00 | May 22, 2026 | 10.9K | 36.9K | 16.3% | $2.40 | $2.42 |
| PUT | $710.00 | May 29, 2026 | 66.7K | 126.4K | 19.6% | $1.47 | $1.49 |
| PUT | $730.00 | May 29, 2026 | 8.0K | 51.9K | 16.3% | $4.64 | $4.68 |
| CALL | $740.00 | May 29, 2026 | 9.6K | 26.2K | 14.9% | $7.06 | $7.10 |
| PUT | $715.00 | May 29, 2026 | 2.8K | 55.2K | 18.8% | $1.94 | $1.97 |
| PUT | $700.00 | Jun 18, 2026 | 10.4K | 91.6K | 20.1% | $3.94 | $3.97 |
| PUT | $735.00 | May 22, 2026 | 32.8K | 17.4K | 17.8% | $3.97 | $4.00 |
| CALL | $733.00 | May 29, 2026 | 224 | 22.7K | 15.9% | $11.27 | $11.49 |
| CALL | $740.00 | Jun 18, 2026 | 10.2K | 34.3K | 15.3% | $12.88 | $12.94 |
| PUT | $738.00 | May 22, 2026 | 6.1K | 12.9K | 17.3% | $5.17 | $5.21 |
Top 10 contracts from the institutional-grade nightly options scan; ranked by gex within the broader S&P 500/400/600 + ETF universe.
Frequently asked SPY options greeks questions
- What are the SPY aggregate Greek exposures?
- As of May 18, 2026, State Street SPDR S&P 500 ETF Trust (SPY) snapshot Greeks are net delta -$78.26B, net gamma -$4.54B, net vega -$1.01B. These aggregate the dealer book across all listed strikes and expirations under the standard customer-versus-dealer sign convention.
- What does the SPY net dealer delta tell us?
- Net dealer delta of -$78.26B represents the directional exposure dealers carry from their option inventory. Dealers continuously hedge this exposure with stock, futures, or correlated instruments, so the size of net delta is also the size of hedge flow that will execute as spot moves.
- How do SPY Greeks inform hedging?
- Delta tracks first-order directional exposure; gamma tracks how quickly delta changes; vega tracks IV sensitivity. Aggregated dealer Greeks let traders read the dealer-positioning regime: long-gamma regimes mean-revert moves; short-gamma regimes amplify them. Vega exposure indicates how dealer P&L responds to vol shocks and hence the direction of vol-shock hedging flows.