As of , published from Oct 16, 2026, 10:07 ET. The evidence table and the rule that fired are at squawkflow.com/options-flow/2026-10-16/spy-771-puts-oct-16-2026-volume-vs-open-interest, where the follow-up at the next settlement and at expiry is added once each is recorded. Source: Schwab options chain.
SPY puts expiring that date in the strikes we track traded 0.8x their open interest, by 09:52 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
| Measure | Value |
|---|---|
| Volume / prior open interest, this strike | 6.0x |
| Volume / prior open interest, the expiry's tracked strikes | 0.83x |
| Days to expiry | 0 |
The median is SPY's put/call volume ratio for contracts 1 to 3 months out over the last 6 sessions. 41,279 put and 15,951 call contracts by 15:57 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 32 expirations.
The median is SPY's put/call volume ratio for contracts 1 to 3 weeks out over the last 6 sessions. 157,210 put and 60,227 call contracts by 15:52 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
Within 3 weeks: 386,752 put and 334,031 call contracts. 1 to 3 months out: 10,797 put and 4,303 call contracts. By 09:47 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
The median is SPY's put/call volume ratio for contracts 1 to 3 months out over the last 6 sessions. 5,076 put and 1,667 call contracts by 09:42 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
The median is SPY's put/call volume ratio for contracts within a week over the last 6 sessions. 5,025 put and 2,206 call contracts by 09:42 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
The median is SPY's call/put volume ratio for contracts within a week over the last 6 sessions. 3,462 call and 1,575 put contracts by 09:37 ET on Oct 16, 2026. Tracked: up to 40 strikes around the money across 33 expirations.