OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CAT $800.00 Put

CAT270115P00800000

Latest saved OI541Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAT $800.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5472730 2026-10-02: 516 OI2026-10-05: 517 OI2026-10-06: 500 OI2026-10-07: 518 OI2026-10-08: 518 OI2026-10-09: 512 OI2026-10-13: 543 OI2026-10-14: 543 OI2026-10-15: 547 OI2026-10-16: 542 OI2026-10-21: 541 OI2026-10-23: 541 OI Oct 02, 2026Oct 23, 2026

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

CAT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5410
Oct 21, 2026541-1
Oct 16, 2026542-5
Oct 15, 2026547+4
Oct 14, 20265430
Oct 13, 2026543+31
Oct 09, 2026512-6
Oct 08, 20265180
Oct 07, 2026518+18
Oct 06, 2026500-17
Oct 05, 2026517+1
Oct 02, 2026516No prior observation