MSFT · 532.5 · CALLS · OCT 9Settled
MSFT 532.5 calls expiring Oct 9 traded 10.9x their open interest
As of , published from Oct 8, 2026, 16:12 ET. Source: Schwab options chain.
MSFT calls expiring that date in the strikes we track traded 2.1x their open interest, by 15:57 ET on Oct 8, 2026. Tracked: up to 40 strikes around the money across 23 expirations.
Evidence
| Measure | Value |
|---|---|
| Volume / prior open interest, this strike | 10.9x |
| Volume / prior open interest, the expiry's tracked strikes | 2.1x |
| Days to expiry | 1 |
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: 2.06; Ratio: 10.91
- Contracts traded behind each figure
- Expiry calls: 40
- Baseline
- this expiry's call volume/open interest, same session: 2.06
- Baseline window
- same expiry, same session (n = strikes with open interest)
- Baseline n
- 40
- Claim level
- 1, arithmetic on reported figures
What happened next
- Next settlement: Open interest in MSFT 532.5 calls expiring Oct 9 rose 1,315 at the Oct 8 settlement.
- Expiry, Oct 9, 2026: Pending expiry.