IWMCOCT 13Open interest change
Open interest in IWM calls expiring Oct 13 rose 6,979 at the Oct 8 settlement
10,189 to 17,168 contracts between the Oct 7 and Oct 8 settlements, 68% of the prior figure.
IWM · PUTS · NOV 20Settled
IWM puts expiring Nov 20 traded 4.5x the calls on that date
As of , published from Oct 8, 2026, 16:11 ET. Source: Schwab options chain.
199,289 put and 43,970 call contracts by 15:56 ET on Oct 8, 2026. Est. premium $57.7M puts, $18.2M calls. Tracked: up to 40 strikes around the money across 33 expirations.
Evidence
| Measure | Value |
|---|---|
| Call volume (contracts) | 43,970 |
| Put volume (contracts) | 199,289 |
| Call open interest, prior settlement | 143,960 |
| Put open interest, prior settlement | 591,805 |
| Call premium, est. (USD) | $18.2M |
| Put premium, est. (USD) | $57.7M |
| Put/call volume ratio | 4.5x |
| Days to expiry | 43 |
Why it fired
- Rule
- put/call volume >= 2.5 (absolute: baseline n 0 < 5); put volume >= 2000; call volume >= 500; expiry >= 1% of ticker volume
- Values that cleared it
- Put volume (contracts): 199,289; Ratio: 4.53
- Contracts traded behind each figure
- Calls: 39; Puts: 38
- Baseline
- median put/call volume ratio, contracts 1 to 3 months out: not set yet
- Baseline window
- last 20 sessions
- Baseline n
- 0, so the fixed threshold applied
- Claim level
- 1, arithmetic on reported figures
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 | 3 | 29 | 7 |
| Puts | 29 | 1 | 8 |
What happened next
- Next settlement: Open interest in IWM puts expiring Nov 20 rose 36,893 at the Oct 8 settlement, to 817,517.
- Expiry, Nov 20, 2026: Pending expiry.
More IWM snapshots, Oct 8, 2026
All IWM snapshots on the hub- IWMPNOV 13Open interest change
Open interest in IWM puts expiring Nov 13 rose 5,715 at the Oct 8 settlement
8,578 to 14,293 contracts between the Oct 7 and Oct 8 settlements, 67% of the prior figure.
- IWMP262NOV 20Volume vs open interest
IWM 262 puts expiring Nov 20 traded 7.0x their open interest
IWM puts expiring that date in the strikes we track traded 0.3x their open interest, by 15:56 ET on Oct 8, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
- IWMPNOV 6Put/call by expiry
IWM puts expiring Nov 6 traded 2.8x the calls on that date
11,625 put and 4,103 call contracts by 15:56 ET on Oct 8, 2026. Est. premium $3.6M puts, $1.6M calls. Tracked: up to 40 strikes around the money across 33 expirations.
- IWMNear vs far dates
IWM put/call volume ratio held at 1.22 within 3 weeks, against 3.47 1 to 3 months out
Within 3 weeks: 511,253 put and 420,014 call contracts. 1 to 3 months out: 259,486 put and 74,819 call contracts. By 15:56 ET on Oct 8, 2026. Tracked: up to 40 strikes around the money across 33 expirations.