SPYCOCT 15Open interest change
Open interest in SPY calls expiring Oct 15 rose 161,128 at the Oct 14 settlement
70,226 to 231,354 contracts between the Oct 13 and Oct 14 settlements, 229% of the prior figure.
SPY · PUTS · OCT 20Settled
Open interest in SPY puts expiring Oct 20 rose 58,993 at the Oct 14 settlement
As of . The evidence table and the rule this settlement figure passed are at squawkflow.com/options-flow/2026-10-14/spy-puts-oct-20-2026-open-interest-change. Source: Cboe settlement open interest archive.
28,019 to 87,012 contracts between the Oct 13 and Oct 14 settlements, 211% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 28,019 |
| Open interest, later settlement | 87,012 |
| Change (contracts) | +58,993 |
| Change as a share of the earlier figure | 211% |
| Earlier settlement | Oct 13, 2026 |
| Later settlement | Oct 14, 2026 |
| Days to expiry | 6 |
Why it fired
- Rule
- |change| >= 10000 or (>= 2000 and >= 50% of prior), and |change share| >= 2.0 x bucket median; prior OI >= 1000
- Values that cleared it
- Change: 58,993; Change as a share of the earlier figure: 2.1055
- Contracts traded behind each figure
- Open interest changed: 82
- Baseline
- median absolute open interest change share, contracts within a week: 0.3759
- Baseline window
- last 20 sessions
- Baseline n
- 20
- Claim level
- 0, a reported fact
What happened next
This snapshot is itself a settlement figure, so it has no follow-up of its own.
More SPY snapshots, Oct 14, 2026
All SPY snapshots on the hub- SPYOCT 16Premium concentration
SPY options expiring Oct 16 drew 51% of tracked SPY est. premium on Oct 14
$310.7M est. of $614.2M est. across the SPY strikes we track, by 16:14 ET. Calls $133.6M, puts $177.1M. Tracked: listed strikes in the 2 nearest expirations.
- SPYPOCT 20Put/call by expiry
SPY puts expiring Oct 20 traded 3.6x the calls on that date
29,338 put and 8,094 call contracts by 10:27 ET on Oct 14, 2026. Est. premium $5.6M puts, $1.9M calls. Tracked: up to 40 strikes around the money across 34 expirations.
- SPYC776OCT 14Volume vs open interest
SPY 776 calls expiring Oct 14 (same day) traded 5.5x their open interest
SPY calls expiring that date in the strikes we track traded 0.8x their open interest, by 09:37 ET on Oct 14, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- SPYNear vs far dates
SPY put/call volume ratio held at 1.01 within 3 weeks, against 2.33 1 to 3 months out
Within 3 weeks: 76,457 put and 75,423 call contracts. 1 to 3 months out: 2,581 put and 1,109 call contracts. By 09:32 ET on Oct 14, 2026. Tracked: up to 40 strikes around the money across 34 expirations.
- SPYOCT 14Same-day share
Same-day contracts accounted for 67% of tracked SPY option volume by 09:32 ET
104,491 of 156,690 tracked contracts on Oct 14, 2026, puts 49,682 and calls 54,809. Tracked: up to 40 strikes around the money across 34 expirations.