SOFI 31 calls expiring Nov 20 traded 7.7x their open interest
As of , published from Oct 8, 2026, 16:14 ET. Source: Schwab options chain.
SOFI calls expiring that date in the strikes we track traded 0.5x their open interest, by 15:59 ET on Oct 8, 2026. Tracked: up to 39 strikes around the money across 19 expirations.
CStrike7.8x
Expiry0.49x
Evidence
The numbers behind this snapshot, Oct 8, 2026, 15:59 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
0.49x
Days to expiry
43
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: 0.49; Ratio: 7.75
Contracts traded behind each figure
Expiry calls: 28
Baseline
this expiry's call volume/open interest, same session: 0.49
Baseline window
same expiry, same session (n = strikes with open interest)
Baseline n
28
Claim level
1, arithmetic on reported figures
What happened next
Next settlement: Open interest in SOFI 31 calls expiring Nov 20 fell 205 at the Oct 8 settlement.
96,516 call and 9,324 put contracts by 15:59 ET on Oct 8, 2026. Est. premium $1.2M calls, $1.1M puts. Tracked: up to 39 strikes around the money across 19 expirations.
5,711 call and 517 put contracts by 15:59 ET on Oct 8, 2026. Est. premium $663K calls, $239K puts. Tracked: up to 39 strikes around the money across 19 expirations.
$16.8M est. of $40.6M est. across the SOFI strikes we track, by 15:59 ET. Calls $1.3M, puts $15.5M. Tracked: up to 39 strikes around the money across 19 expirations.
Within 3 weeks: 58,495 put and 101,470 call contracts. 1 to 3 months out: 27,304 put and 128,327 call contracts. By 15:59 ET on Oct 8, 2026. Tracked: up to 39 strikes around the money across 19 expirations.