EWZ · CALLS · JAN 15 '27Settled

Open interest in EWZ calls expiring Jan 15, 2027 rose 58,045 at the Oct 8 settlement

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

526,679 to 584,724 contracts between the Oct 7 and Oct 8 settlements, 11% 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	526,679
Open interest, later settlement	584,724
Change (contracts)	+58,045
Change as a share of the earlier figure	11%
Earlier settlement	Oct 7, 2026
Later settlement	Oct 8, 2026
Days to expiry	99

Rule: |change| >= 10000 or (>= 2000 and >= 50% of prior) (absolute: baseline n 1 < 5); prior OI >= 1000
Values that cleared it: Change: 58,045; Change as a share of the earlier figure: 0.1102
Contracts traded behind each figure: Open interest changed: 17
Baseline: median absolute open interest change share, contracts more than 3 months out: 0.024
Baseline window: last 20 sessions
Baseline n: 1, so the fixed threshold applied
Claim level: 0, a reported fact

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

EWZCJUL 16 '27Open interest change
Settled
Open interest in EWZ calls expiring Jul 16, 2027 rose 15,003 at the Oct 8 settlement
45,957 to 60,960 contracts between the Oct 7 and Oct 8 settlements, 33% of the prior figure.
Source: Cboe settlement open interest archiveEWZ page Details