EWZCDEC 17 '27Open interest change
Open interest in EWZ calls expiring Dec 17, 2027 rose 12,006 at the Oct 20 settlement
8,558 to 20,564 contracts between the Oct 19 and Oct 20 settlements, 140% of the prior figure.
EWZ · CALLS · OCT 30Settled
Open interest in EWZ calls expiring Oct 30 (1 week out) rose 191,168 at the Oct 20 settlement
As of . Source: Cboe settlement open interest archive.
On the page at squawkflow.com/options-flow/2026-10-20/ewz-calls-oct-30-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other EWZ snapshots from Oct 20, 2026.
192,771 to 383,939 contracts between the Oct 19 and Oct 20 settlements, 99% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 192,771 |
| Open interest, later settlement | 383,939 |
| Change (contracts) | +191,168 |
| Change as a share of the earlier figure | 99% |
| Earlier settlement | Oct 19, 2026 |
| Later settlement | Oct 20, 2026 |
| Days to expiry | 10 |
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: 191,168; Change as a share of the earlier figure: 0.9917
- Contracts traded behind each figure
- Open interest changed: 29
- Baseline
- median absolute open interest change share, contracts 1 to 3 weeks out: 0.0729
- Baseline window
- last 20 sessions
- Baseline n
- 7
- 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.