SPX · CALLS · NOV 2Settled

Open interest in SPX calls expiring Nov 2 (2 weeks out) rose 16,754 at the Oct 19 settlement

As of Oct 19, 2026 settlement. Source: Cboe settlement open interest archive.

On the page at squawkflow.com/options-flow/2026-10-19/spx-calls-nov-2-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other SPX snapshots from Oct 19, 2026.

14,767 to 31,521 contracts between the Oct 16 and Oct 19 settlements, 113% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 19, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	14,767
Open interest, later settlement	31,521
Change (contracts)	+16,754
Change as a share of the earlier figure	113%
Earlier settlement	Oct 16, 2026
Later settlement	Oct 19, 2026
Days to expiry	14

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: 16,754; Change as a share of the earlier figure: 1.1346
Contracts traded behind each figure: Open interest changed: 80
Baseline: median absolute open interest change share, contracts 1 to 3 weeks out: 0.0852
Baseline window: last 20 sessions
Baseline n: 20
Claim level: 0, a reported fact

This snapshot is itself a settlement figure, so it has no follow-up of its own.

SPXCOCT 20Open interest change
Settled
Open interest in SPX calls expiring Oct 20 rose 88,901 at the Oct 19 settlement
57,574 to 146,475 contracts between the Oct 16 and Oct 19 settlements, 154% of the prior figure.
Source: Cboe settlement open interest archiveDetails