IWMCOCT 19Open interest change
Open interest in IWM calls expiring Oct 19 rose 8,975 at the Oct 15 settlement
15,971 to 24,946 contracts between the Oct 14 and Oct 15 settlements, 56% of the prior figure.
IWM · CALLS · OCT 23Settled
IWM calls outnumbered puts 1.5 to 1 expiring Oct 23 (1 week out), vs a 0.5 median
As of , published from Oct 15, 2026, 10:26 ET. The evidence table and the rule that fired are at squawkflow.com/options-flow/2026-10-15/iwm-calls-oct-23-2026-put-call-skew, with the follow-up recorded at Oct 16, 2026, 08:30 ET. Source: Schwab options chain.
The median is IWM's call/put volume ratio for contracts 1 to 3 weeks out over the last 5 sessions. 5,141 call and 3,367 put contracts by 10:11 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
Evidence
| Measure | Value |
|---|---|
| Call volume (contracts) | 5,141 |
| Put volume (contracts) | 3,367 |
| Call open interest, prior settlement | 52,653 |
| Put open interest, prior settlement | 96,200 |
| Call premium, est. (USD) | $860K |
| Put premium, est. (USD) | $519K |
| Call/put volume ratio | 1.5x |
| Days to expiry | 8 |
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): 5,141; Ratio: 1.53
- Contracts traded behind each figure
- Calls: 28; Puts: 30
- Baseline
- median call/put volume ratio, contracts 1 to 3 weeks out: 0.5263
- 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 | 10 | 14 | 4 |
| Puts | 23 | 5 | 2 |
What happened next
- Next settlement: Open interest in IWM calls expiring Oct 23 rose 18,562 at the Oct 15 settlement, to 117,801.
- Expiry, Oct 23, 2026: Pending expiry.
More IWM snapshots, Oct 15, 2026
All IWM snapshots on the hub- IWMPJUN 17 '27Put/call by expiry
IWM puts expiring Jun 17, 2027 traded 3.4x the calls, vs a 1.1x median
The median is IWM's put/call volume ratio for contracts more than 3 months out over the last 5 sessions. 9,902 put and 2,936 call contracts by 15:56 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
- IWMPJAN 15 '27Put/call by expiry
IWM puts expiring Jan 15, 2027 traded 5.6x the calls, vs a 3.0x median
The median is IWM's put/call volume ratio for contracts 1 to 3 months out over the last 5 sessions. 10,771 put and 1,917 call contracts by 10:11 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- IWMPOCT 16Put/call by expiry
IWM puts expiring Oct 16 traded 1.6x the calls, vs a 0.7x median
The median is IWM's put/call volume ratio for contracts within a week over the last 5 sessions. 40,018 put and 25,377 call contracts by 10:01 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- IWMCNOV 13Put/call by expiry
IWM calls outnumbered puts 4.2 to 1 expiring Nov 13, vs a 0.3 median
The median is IWM's call/put volume ratio for contracts 1 to 3 months out over the last 5 sessions. 2,166 call and 517 put contracts by 09:56 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- IWMC272OCT 15Volume vs open interest
IWM 272 calls expiring Oct 15 (same day) traded 5.2x their open interest
IWM calls expiring that date in the strikes we track traded 1.4x their open interest, by 09:51 ET on Oct 15, 2026. Tracked: up to 40 strikes around the money across 34 expirations.