MS · CALLS · OCT 9Settled

Open interest in MS calls expiring Oct 9 rose 3,908 at the Oct 6 settlement

As of Oct 6, 2026 settlement. Source: Cboe settlement open interest archive.

7,648 to 11,556 contracts between the Oct 5 and Oct 6 settlements, 51% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 6, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	7,648
Open interest, later settlement	11,556
Change (contracts)	+3,908
Change as a share of the earlier figure	51%
Earlier settlement	Oct 5, 2026
Later settlement	Oct 6, 2026
Days to expiry	3

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: 3,908; Change as a share of the earlier figure: 0.511
Contracts traded behind each figure: Open interest changed: 11
Baseline: median absolute open interest change share, contracts within a week: 0.0677
Baseline window: last 20 sessions
Baseline n: 7
Claim level: 0, a reported fact

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