IWM 278 puts expiring Oct 9 (same day) traded 5.3x their open interest
As of , published from Oct 9, 2026, 10:21 ET. Source: Schwab options chain.
IWM puts expiring that date in the strikes we track traded 0.5x their open interest, by 10:06 ET on Oct 9, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
PStrike5.3x
Expiry0.49x
Evidence
The numbers behind this snapshot, Oct 9, 2026, 10:06 ET. Session volume from delayed options chain snapshots, published at least 15 minutes after capture. Totals cover the strikes captured around the money, not every listed strike. Not individual trades. Premium is an estimate: volume times the quote midpoint.
Measure
Value
Volume / prior open interest, this strike
5.3x
Volume / prior open interest, the expiry's tracked strikes
0.49x
Days to expiry
0
Why it fired
Rule
volume/prior OI >= 5.0 and >= 3.0 x this expiry's put volume/OI; prior OI >= 1000; volume >= 2000
Values that cleared it
Expiry ratio: 0.49; Ratio: 5.28
Contracts traded behind each figure
Expiry puts: 25
Baseline
this expiry's put volume/open interest, same session: 0.49
Baseline window
same expiry, same session (n = strikes with open interest)
15,655 call and 4,586 put contracts by 14:56 ET on Oct 9, 2026. Est. premium $1.3M calls, $335K puts. Tracked: up to 40 strikes around the money across 34 expirations.
19,822 put and 5,945 call contracts by 14:05 ET on Oct 9, 2026. Est. premium $12.8M puts, $4.3M calls. Tracked: up to 40 strikes around the money across 34 expirations.
9,241 call and 587 put contracts by 13:40 ET on Oct 9, 2026. Est. premium $1.7M calls, $265K puts. Tracked: up to 40 strikes around the money across 34 expirations.
5,482 put and 1,864 call contracts by 11:51 ET on Oct 9, 2026. Est. premium $432K puts, $349K calls. Tracked: up to 40 strikes around the money across 34 expirations.
22,495 put and 8,046 call contracts by 10:56 ET on Oct 9, 2026. Est. premium $8.4M puts, $2.4M calls. Tracked: up to 40 strikes around the money across 34 expirations.
30,233 put and 4,078 call contracts by 10:35 ET on Oct 9, 2026. Est. premium $5.8M puts, $1.0M calls. Tracked: up to 40 strikes around the money across 34 expirations.