MDT · PUTS · OCT 16Settled

Open interest in MDT puts expiring Oct 16 (1 week out) rose 26,783 at the Oct 8 settlement

As of Oct 8, 2026 settlement. Source: Cboe settlement open interest archive.

35,037 to 61,820 contracts between the Oct 7 and Oct 8 settlements, 76% of the prior figure.

Evidence

The numbers behind this snapshot, Oct 8, 2026 settlement. Open interest change, not trades; it does not say which side opened or closed.
Measure	Value
Open interest, earlier settlement	35,037
Open interest, later settlement	61,820
Change (contracts)	+26,783
Change as a share of the earlier figure	76%
Earlier settlement	Oct 7, 2026
Later settlement	Oct 8, 2026
Days to expiry	8

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: 26,783; Change as a share of the earlier figure: 0.7644
Contracts traded behind each figure: Open interest changed: 14
Baseline: median absolute open interest change share, contracts 1 to 3 weeks out: 0.0262
Baseline window: last 20 sessions
Baseline n: 16
Claim level: 0, a reported fact

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

MDTCOCT 16Open interest change
Settled
Open interest in MDT calls expiring Oct 16 (1 week out) rose 33,994 at the Oct 8 settlement
84,007 to 118,001 contracts between the Oct 7 and Oct 8 settlements, 40% of the prior figure.
Source: Cboe settlement open interest archiveMDT page Details