SPCXCOCT 23Open interest change
Open interest in SPCX calls expiring Oct 23 rose 46,207 at the Oct 19 settlement
107,223 to 153,430 contracts between the Oct 16 and Oct 19 settlements, 43% of the prior figure.
SPCX · CALLS · OCT 21Settled
Open interest in SPCX calls expiring Oct 21 rose 19,820 at the Oct 19 settlement
As of . Source: Cboe settlement open interest archive.
On the page at squawkflow.com/options-flow/2026-10-19/spcx-calls-oct-21-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other SPCX snapshots from Oct 19, 2026.
30,899 to 50,719 contracts between the Oct 16 and Oct 19 settlements, 64% of the prior figure.
Evidence
| Measure | Value |
|---|---|
| Open interest, earlier settlement | 30,899 |
| Open interest, later settlement | 50,719 |
| Change (contracts) | +19,820 |
| Change as a share of the earlier figure | 64% |
| Earlier settlement | Oct 16, 2026 |
| Later settlement | Oct 19, 2026 |
| Days to expiry | 2 |
Why it fired
- Rule
- |change| >= 10000 or (>= 2000 and >= 50% of prior) (absolute: baseline n 2 < 5); prior OI >= 1000
- Values that cleared it
- Change: 19,820; Change as a share of the earlier figure: 0.6414
- Contracts traded behind each figure
- Open interest changed: 52
- Baseline
- median absolute open interest change share, contracts within a week: 0.6268
- Baseline window
- last 20 sessions
- Baseline n
- 2, 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.