SPY calls expiring that date in the strikes we track traded 0.6x their open interest, by 09:32 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
CStrike7.6x
Expiry0.58x
Evidence
The numbers behind this snapshot, Oct 22, 2026, 09:32 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
7.6x
Volume / prior open interest, the expiry's tracked strikes
0.58x
Days to expiry
0
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: 0.58; Ratio: 7.6
Contracts traded behind each figure
Expiry calls: 33
Baseline
this expiry's call volume/open interest, same session: 0.58
Baseline window
same expiry, same session (n = strikes with open interest)
The median is SPY's put/call volume ratio for contracts within a week over the last 10 sessions. 348,105 put and 140,572 call contracts by 16:13 ET on Oct 22, 2026. Tracked: listed strikes in the 2 nearest expirations.
The median is SPY's call/put volume ratio for contracts more than 3 months out over the last 10 sessions. 12,112 call and 834 put contracts by 09:47 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
The median is SPY's put/call volume ratio for contracts 1 to 3 months out over the last 10 sessions. 3,538 put and 1,008 call contracts by 09:37 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
The median is SPY's call/put volume ratio for contracts same day over the last 9 sessions. 85,074 call and 41,094 put contracts by 09:32 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
The median is SPY's put/call volume ratio for contracts 1 to 3 weeks out over the last 10 sessions. 5,132 put and 2,242 call contracts by 09:32 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
Within 3 weeks: 70,132 put and 108,333 call contracts. 1 to 3 months out: 4,564 put and 1,496 call contracts. By 09:32 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 34 expirations.