CL · PUTS · DEC 18Settled

Open interest in CL puts expiring Dec 18 rose 2,852 at the Oct 7 settlement

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

3,681 to 6,533 contracts between the Oct 6 and Oct 7 settlements, 77% 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	3,681
Open interest, later settlement	6,533
Change (contracts)	+2,852
Change as a share of the earlier figure	77%
Earlier settlement	Oct 6, 2026
Later settlement	Oct 7, 2026
Days to expiry	72

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: 2,852; Change as a share of the earlier figure: 0.7748
Contracts traded behind each figure: Open interest changed: 5
Baseline: median absolute open interest change share, contracts 1 to 3 months out: 0.0195
Baseline window: last 20 sessions
Baseline n: 15
Claim level: 0, a reported fact

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