OITracker Cboe delayed data

Contract OI history

Back to CALM

Feb 19, 2027 EXPIRATION

CALM $50.00 Put

CALM270219P00050000

Latest saved OI32Oct 23, 2026
Last change+13vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CALM $50.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 32160 2026-10-08: 14 OI2026-10-09: 14 OI2026-10-13: 14 OI2026-10-14: 16 OI2026-10-16: 16 OI2026-10-20: 19 OI2026-10-23: 32 OI Oct 08, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CALM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing32+13
Oct 20, 202619+3
Oct 16, 2026160
Oct 14, 202616+2
Oct 13, 2026140
Oct 09, 2026140
Oct 08, 202614No prior observation