SPYPOCT 19Open interest change
Open interest in SPY puts expiring Oct 19 rose 201,858 at the Oct 15 settlement
93,948 to 295,806 contracts between the Oct 14 and Oct 15 settlements, 215% of the prior figure.
SPY · CALLS · OCT 30Settled
SPY calls outnumbered puts 6.6 to 1 expiring Oct 30 (2 weeks out), vs a 1.0 median
As of , published from Oct 15, 2026, 09:47 ET. The evidence table and the rule that fired are at squawkflow.com/options-flow/2026-10-15/spy-calls-oct-30-2026-put-call-skew, with the follow-up recorded at Oct 16, 2026, 08:30 ET. Source: Schwab options chain.
The median is SPY's call/put volume ratio for contracts 1 to 3 weeks out over the last 5 sessions. 4,760 call and 716 put contracts by 09:32 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
Evidence
| Measure | Value |
|---|---|
| Call volume (contracts) | 4,760 |
| Put volume (contracts) | 716 |
| Call open interest, prior settlement | 111,844 |
| Put open interest, prior settlement | 267,656 |
| Call premium, est. (USD) | $2.6M |
| Put premium, est. (USD) | $494K |
| Call/put volume ratio | 6.7x |
| Days to expiry | 15 |
Why it fired
- Rule
- call/put volume >= max(1.5, 1.75 x baseline median); call volume >= 2000
- Values that cleared it
- Call volume (contracts): 4,760; Ratio: 6.65
- Contracts traded behind each figure
- Calls: 22; Puts: 30
- Baseline
- median call/put volume ratio, contracts 1 to 3 weeks out: 1
- Baseline window
- last 20 sessions
- Baseline n
- 5
- Claim level
- 2, compared with a baseline
Last-trade position, raw counts
Count of contracts whose single last trade sat near the ask or bid. Not the side of the session's volume. It is not used in the headline.
| Side of chain | Near ask | Near bid | Other |
|---|---|---|---|
| Calls | 8 | 10 | 4 |
| Puts | 13 | 9 | 8 |
What happened next
- Next settlement: Open interest in SPY calls expiring Oct 30 rose 20,206 at the Oct 15 settlement, to 490,769.
- Expiry, Oct 30, 2026: Pending expiry.
More SPY snapshots, Oct 15, 2026
All SPY snapshots on the hub- SPYPOCT 28Open interest change
Open interest in SPY puts expiring Oct 28 (2 weeks out) rose 13,708 at the Oct 15 settlement
2,987 to 16,695 contracts between the Oct 14 and Oct 15 settlements, 459% of the prior figure.
- SPYPOCT 30Put/call by expiry
SPY puts expiring Oct 30 (2 weeks out) traded 5.4x the calls, vs a 1.0x median
The median is SPY's put/call volume ratio for contracts 1 to 3 weeks out over the last 5 sessions. 174,086 put and 32,111 call contracts by 12:17 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- SPYCMAR 19 '27Put/call by expiry
SPY calls outnumbered puts 1.6 to 1 expiring Mar 19, 2027, vs a 0.7 median
The median is SPY's call/put volume ratio for contracts more than 3 months out over the last 5 sessions. 12,544 call and 7,725 put contracts by 09:57 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- SPYNear vs far dates
SPY put/call volume ratio held at 1.26 within 3 weeks, against 2.72 1 to 3 months out
Within 3 weeks: 621,207 put and 494,296 call contracts. 1 to 3 months out: 21,788 put and 8,009 call contracts. By 09:52 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- SPYPNOV 20Put/call by expiry
SPY puts expiring Nov 20 traded 2.8x the calls, vs a 1.3x median
The median is SPY's put/call volume ratio for contracts 1 to 3 months out over the last 5 sessions. 7,610 put and 2,712 call contracts by 09:47 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.