MSFT puts expiring that date in the strikes we track traded 0.9x their open interest, by 14:17 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 22 expirations.
PStrike5.0x
Expiry0.92x
Evidence
The numbers behind this snapshot, Oct 22, 2026, 14:17 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
5.0x
Volume / prior open interest, the expiry's tracked strikes
0.92x
Days to expiry
1
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: 0.92; Ratio: 5
Contracts traded behind each figure
Expiry puts: 31
Baseline
this expiry's put volume/open interest, same session: 0.92
Baseline window
same expiry, same session (n = strikes with open interest)
The median is MSFT's put/call volume ratio for contracts more than 3 months out over the last 10 sessions. 2,356 put and 1,484 call contracts by 13:57 ET on Oct 22, 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 10 sessions. 2,044 call and 605 put contracts by 10:02 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 22 expirations.
Within 3 weeks: 20,013 put and 16,540 call contracts. 1 to 3 months out: 1,056 put and 2,388 call contracts. By 09:53 ET on Oct 22, 2026. Tracked: up to 40 strikes around the money across 22 expirations.