SPY calls expiring that date in the strikes we track traded 0.5x their open interest, by 09:37 ET on Oct 30, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
CStrike7.8x
Expiry0.46x
Evidence
The numbers behind this snapshot, Oct 30, 2026, 09:37 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
7.8x
Volume / prior open interest, the expiry's tracked strikes
0.46x
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: 0.46; Ratio: 7.79
Contracts traded behind each figure
Expiry calls: 36
Baseline
this expiry's call volume/open interest, same session: 0.46
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 16 sessions. 58,826 put and 27,522 call contracts by 12:07 ET on Oct 30, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
The median is SPY's put/call volume ratio for contracts more than 3 months out over the last 16 sessions. 21,853 put and 532 call contracts by 09:57 ET on Oct 30, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
The median is SPY's call/put volume ratio for contracts more than 3 months out over the last 16 sessions. 12,423 call and 2,072 put contracts by 09:52 ET on Oct 30, 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 16 sessions. 4,542 put and 589 call contracts by 09:32 ET on Oct 30, 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 16 sessions. 3,563 put and 501 call contracts by 09:32 ET on Oct 30, 2026. Tracked: up to 40 strikes around the money across 34 expirations.