SPY · PUTS · OCT 8Settled

Open interest in SPY puts expiring Oct 8 rose 224,380 at the Oct 7 settlement

As of Oct 7, 2026 settlement. Source: Cboe settlement open interest archive.

113,198 to 337,578 contracts between the Oct 6 and Oct 7 settlements, 198% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 7, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	113,198
Open interest, later settlement	337,578
Change (contracts)	+224,380
Change as a share of the earlier figure	198%
Earlier settlement	Oct 6, 2026
Later settlement	Oct 7, 2026
Days to expiry	1

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: 224,380; Change as a share of the earlier figure: 1.9822
Contracts traded behind each figure: Open interest changed: 80
Baseline: median absolute open interest change share, contracts within a week: 0.4047
Baseline window: last 20 sessions
Baseline n: 18
Claim level: 0, a reported fact

This snapshot is itself a settlement figure, so it has no follow-up of its own.

SPYCOCT 8Open interest change
Settled
Open interest in SPY calls expiring Oct 8 rose 102,869 at the Oct 7 settlement
82,267 to 185,136 contracts between the Oct 6 and Oct 7 settlements, 125% of the prior figure.
Source: Cboe settlement open interest archiveSPY page Details