EWZ · CALLS · DEC 17 '27Settled

Open interest in EWZ calls expiring Dec 17, 2027 rose 12,006 at the Oct 20 settlement

As of Oct 20, 2026 settlement. Source: Cboe settlement open interest archive.

On the page at squawkflow.com/options-flow/2026-10-20/ewz-calls-dec-17-2027-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other EWZ snapshots from Oct 20, 2026.

8,558 to 20,564 contracts between the Oct 19 and Oct 20 settlements, 140% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 20, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	8,558
Open interest, later settlement	20,564
Change (contracts)	+12,006
Change as a share of the earlier figure	140%
Earlier settlement	Oct 19, 2026
Later settlement	Oct 20, 2026
Days to expiry	423

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: 12,006; Change as a share of the earlier figure: 1.4029
Contracts traded behind each figure: Open interest changed: 4
Baseline: median absolute open interest change share, contracts more than 3 months out: 0.007
Baseline window: last 20 sessions
Baseline n: 7
Claim level: 0, a reported fact

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

EWZCOCT 30Open interest change
Settled
Open interest in EWZ calls expiring Oct 30 (1 week out) rose 191,168 at the Oct 20 settlement
192,771 to 383,939 contracts between the Oct 19 and Oct 20 settlements, 99% of the prior figure.
Source: Cboe settlement open interest archiveEWZ page Details