ET · CALLS · OCT 16Settled

Open interest in ET calls expiring Oct 16 (1 week out) rose 13,113 at the Oct 8 settlement

As of Oct 8, 2026 settlement. Source: Cboe settlement open interest archive.

137,419 to 150,532 contracts between the Oct 7 and Oct 8 settlements, 10% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 8, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	137,419
Open interest, later settlement	150,532
Change (contracts)	+13,113
Change as a share of the earlier figure	10%
Earlier settlement	Oct 7, 2026
Later settlement	Oct 8, 2026
Days to expiry	8

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: 13,113; Change as a share of the earlier figure: 0.0954
Contracts traded behind each figure: Open interest changed: 9
Baseline: median absolute open interest change share, contracts 1 to 3 weeks out: 0.0321
Baseline window: last 20 sessions
Baseline n: 6
Claim level: 0, a reported fact

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