OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

CAL $7.50 Put

CAL261218P00007500

Latest saved OI2,845Oct 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 $7.50 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. 2,8451,4220 2026-10-02: 2,845 OI2026-10-05: 2,845 OI2026-10-06: 2,845 OI2026-10-07: 2,845 OI2026-10-08: 2,845 OI2026-10-09: 2,845 OI2026-10-13: 2,845 OI2026-10-14: 2,845 OI2026-10-16: 2,845 OI2026-10-20: 2,845 OI2026-10-23: 2,845 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, 2026Viewing2,8450
Oct 20, 20262,8450
Oct 16, 20262,8450
Oct 14, 20262,8450
Oct 13, 20262,8450
Oct 09, 20262,8450
Oct 08, 20262,8450
Oct 07, 20262,8450
Oct 06, 20262,8450
Oct 05, 20262,8450
Oct 02, 20262,845No prior observation