SPYPOCT 21Open interest change
Open interest in SPY puts expiring Oct 21 (2 weeks out) rose 8,132 at the Oct 8 settlement
1,742 to 9,874 contracts between the Oct 7 and Oct 8 settlements, 467% of the prior figure.
SPY · 776 · CALLS · OCT 9Settled
SPY 776 calls expiring Oct 9 traded 27.6x their open interest
As of , published from Oct 8, 2026, 16:12 ET. Source: Schwab options chain.
SPY calls expiring that date in the strikes we track traded 2.6x their open interest, by 15:57 ET on Oct 8, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
Evidence
| Measure | Value |
|---|---|
| Volume / prior open interest, this strike | 27.6x |
| Volume / prior open interest, the expiry's tracked strikes | 2.6x |
| Days to expiry | 1 |
Why it fired
- Rule
- volume/prior OI >= 5.0 and >= 3.0 x this expiry's call volume/OI; prior OI >= 1000; volume >= 2000
- Values that cleared it
- Expiry ratio: 2.59; Ratio: 27.61
- Contracts traded behind each figure
- Expiry calls: 40
- Baseline
- this expiry's call volume/open interest, same session: 2.59
- Baseline window
- same expiry, same session (n = strikes with open interest)
- Baseline n
- 40
- Claim level
- 1, arithmetic on reported figures
What happened next
- Next settlement: Open interest in SPY 776 calls expiring Oct 9 rose 7,455 at the Oct 8 settlement.
- Expiry, Oct 9, 2026: Pending expiry.
More SPY snapshots, Oct 8, 2026
All SPY snapshots on the hub- SPYCOCT 21Open interest change
Open interest in SPY calls expiring Oct 21 (2 weeks out) rose 5,673 at the Oct 8 settlement
1,859 to 7,532 contracts between the Oct 7 and Oct 8 settlements, 305% of the prior figure.
- SPYCOCT 14Put/call by expiry
SPY calls outnumbered puts 3.4 to 1 in contracts expiring Oct 14
134,667 call and 39,330 put contracts by 15:57 ET on Oct 8, 2026. Est. premium $14.7M calls, $12.9M puts. Tracked: up to 40 strikes around the money across 33 expirations.
- SPYPJAN 15 '27Put/call by expiry
SPY puts expiring Jan 15, 2027 traded 2.7x the calls on that date
26,908 put and 10,129 call contracts by 15:57 ET on Oct 8, 2026. Est. premium $33.9M puts, $15.0M calls. Tracked: up to 40 strikes around the money across 33 expirations.