TLT · CALLS · DEC 18Settled

Open interest in TLT calls expiring Dec 18 rose 99,733 at the Oct 20 settlement

As of Oct 20, 2026 settlement. Source: Cboe settlement open interest archive.

On the page at squawkflow.com/options-flow/2026-10-20/tlt-calls-dec-18-2026-open-interest-change: the evidence table and the rule this settlement figure passed; and up to six other TLT snapshots from Oct 20, 2026.

1,152,654 to 1,252,387 contracts between the Oct 19 and Oct 20 settlements, 9% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 20, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	1,152,654
Open interest, later settlement	1,252,387
Change (contracts)	+99,733
Change as a share of the earlier figure	9%
Earlier settlement	Oct 19, 2026
Later settlement	Oct 20, 2026
Days to expiry	59

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: 99,733; Change as a share of the earlier figure: 0.0865
Contracts traded behind each figure: Open interest changed: 22
Baseline: median absolute open interest change share, contracts 1 to 3 months out: 0.0307
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.

TLTCNOV 20Open interest change
Settled
Open interest in TLT calls expiring Nov 20 rose 82,780 at the Oct 20 settlement
676,597 to 759,377 contracts between the Oct 19 and Oct 20 settlements, 12% of the prior figure.
Source: Cboe settlement open interest archiveTLT page Details