EWZCOCT 30Open interest change
Open interest in EWZ calls expiring Oct 30 (2 weeks out) rose 64,786 at the Oct 19 settlement
127,985 to 192,771 contracts between the Oct 16 and Oct 19 settlements, 51% of the prior figure.
EWZ · CALLS · OCT 23Settled
Open interest in EWZ calls expiring Oct 23 rose 20,662 at the Oct 19 settlement
As of . Source: Cboe settlement open interest archive.
On the page at squawkflow.com/options-flow/2026-10-19/ewz-calls-oct-23-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other EWZ snapshots from Oct 19, 2026.
66,542 to 87,204 contracts between the Oct 16 and Oct 19 settlements, 31% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 66,542 |
| Open interest, later settlement | 87,204 |
| Change (contracts) | +20,662 |
| Change as a share of the earlier figure | 31% |
| Earlier settlement | Oct 16, 2026 |
| Later settlement | Oct 19, 2026 |
| Days to expiry | 4 |
Why it fired
- 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: 20,662; Change as a share of the earlier figure: 0.3105
- Contracts traded behind each figure
- Open interest changed: 17
- Baseline
- median absolute open interest change share, contracts within a week: 0.0345
- Baseline window
- last 20 sessions
- Baseline n
- 5
- Claim level
- 0, a reported fact
What happened next
This snapshot is itself a settlement figure, so it has no follow-up of its own.