OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

CAL $10.00 Put

CAL261218P00010000

Latest saved OI2,061Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAL $10.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,0611,0300 2026-10-02: 2,040 OI2026-10-05: 2,040 OI2026-10-06: 2,040 OI2026-10-07: 2,040 OI2026-10-08: 2,040 OI2026-10-09: 2,040 OI2026-10-13: 2,040 OI2026-10-14: 2,061 OI2026-10-16: 2,061 OI2026-10-20: 2,061 OI2026-10-23: 2,061 OI Oct 02, 2026Oct 23, 2026

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

CAL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,0610
Oct 20, 20262,0610
Oct 16, 20262,0610
Oct 14, 20262,061+21
Oct 13, 20262,0400
Oct 09, 20262,0400
Oct 08, 20262,0400
Oct 07, 20262,0400
Oct 06, 20262,0400
Oct 05, 20262,0400
Oct 02, 20262,040No prior observation