EWZCNOV 27Open interest change
Open interest in EWZ calls expiring Nov 27 rose 2,630 at the Oct 12 settlement
1,079 to 3,709 contracts between the Oct 9 and Oct 12 settlements, 244% of the prior figure.
EWZ · PUTS · NOV 20Settled
Open interest in EWZ puts expiring Nov 20 rose 54,343 at the Oct 12 settlement
As of . Source: Cboe settlement open interest archive.
876,401 to 930,744 contracts between the Oct 9 and Oct 12 settlements, 6% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 876,401 |
| Open interest, later settlement | 930,744 |
| Change (contracts) | +54,343 |
| Change as a share of the earlier figure | 6% |
| Earlier settlement | Oct 9, 2026 |
| Later settlement | Oct 12, 2026 |
| Days to expiry | 39 |
Why it fired
- Rule
- |change| >= 10000 or (>= 2000 and >= 50% of prior) (absolute: baseline n 3 < 5); prior OI >= 1000
- Values that cleared it
- Change: 54,343; Change as a share of the earlier figure: 0.062
- Contracts traded behind each figure
- Open interest changed: 18
- Baseline
- median absolute open interest change share, contracts 1 to 3 months out: 0.0163
- Baseline window
- last 20 sessions
- Baseline n
- 3, so the fixed threshold applied
- 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.