XLP · PUTS · DEC 18Settled

Open interest in XLP puts expiring Dec 18 rose 45,575 at the Oct 21 settlement

As of Oct 21, 2026 settlement. Source: Cboe settlement open interest archive.

On the page at squawkflow.com/options-flow/2026-10-21/xlp-puts-dec-18-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other XLP snapshots from Oct 21, 2026.

163,609 to 209,184 contracts between the Oct 20 and Oct 21 settlements, 28% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 21, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	163,609
Open interest, later settlement	209,184
Change (contracts)	+45,575
Change as a share of the earlier figure	28%
Earlier settlement	Oct 20, 2026
Later settlement	Oct 21, 2026
Days to expiry	58

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: 45,575; Change as a share of the earlier figure: 0.2786
Contracts traded behind each figure: Open interest changed: 14
Baseline: median absolute open interest change share, contracts 1 to 3 months out: 0.046
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.

XLPPNOV 20Open interest change
Settled
Open interest in XLP puts expiring Nov 20 rose 31,686 at the Oct 21 settlement
74,411 to 106,097 contracts between the Oct 20 and Oct 21 settlements, 43% of the prior figure.
Source: Cboe settlement open interest archiveXLP page Details