WFCCDEC 18Open interest change
Open interest in WFC calls expiring Dec 18 fell 22,852 at the Oct 8 settlement
103,185 to 80,333 contracts between the Oct 7 and Oct 8 settlements, 22% of the prior figure.
WFC · PUTS · JAN 19 '29Settled
Open interest in WFC puts expiring Jan 19, 2029 rose 5,248 at the Oct 8 settlement
As of . Source: Cboe settlement open interest archive.
3,328 to 8,576 contracts between the Oct 7 and Oct 8 settlements, 158% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 3,328 |
| Open interest, later settlement | 8,576 |
| Change (contracts) | +5,248 |
| Change as a share of the earlier figure | 158% |
| Earlier settlement | Oct 7, 2026 |
| Later settlement | Oct 8, 2026 |
| Days to expiry | 834 |
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: 5,248; Change as a share of the earlier figure: 1.5769
- Contracts traded behind each figure
- Open interest changed: 6
- Baseline
- median absolute open interest change share, contracts more than 3 months out: 0.0057
- Baseline window
- last 20 sessions
- Baseline n
- 16
- 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.