MSFT calls expiring that date in the strikes we track traded 1.0x their open interest, by 10:12 ET on Oct 26, 2026. Tracked: up to 40 strikes around the money across 22 expirations.
CStrike5.2x
Expiry1.0x
Evidence
The numbers behind this snapshot, Oct 26, 2026, 10:12 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
5.2x
Volume / prior open interest, the expiry's tracked strikes
1.0x
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: 1.02; Ratio: 5.15
Contracts traded behind each figure
Expiry calls: 31
Baseline
this expiry's call volume/open interest, same session: 1.02
Baseline window
same expiry, same session (n = strikes with open interest)
The median is MSFT's call/put volume ratio for contracts 1 to 3 months out over the last 12 sessions. 13,919 call and 1,921 put contracts by 11:53 ET on Oct 26, 2026. Tracked: up to 40 strikes around the money across 22 expirations.
Within 3 weeks: 47,132 put and 111,080 call contracts. 1 to 3 months out: 5,520 put and 26,304 call contracts. By 11:53 ET on Oct 26, 2026. Tracked: up to 40 strikes around the money across 22 expirations.
The median is MSFT's call/put volume ratio for contracts 1 to 3 months out over the last 12 sessions. 3,123 call and 968 put contracts by 10:53 ET on Oct 26, 2026. Tracked: up to 40 strikes around the money across 22 expirations.
The median is MSFT's call/put volume ratio for contracts 1 to 3 weeks out over the last 12 sessions. 4,356 call and 567 put contracts by 10:12 ET on Oct 26, 2026. Tracked: up to 40 strikes around the money across 22 expirations.