OITracker Cboe delayed data

Contract OI history

Back to RCI

Dec 18, 2026 EXPIRATION

RCI $25.00 Put

RCI261218P00025000

Latest saved OI368Oct 23, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RCI $25.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3681840 2026-10-02: 351 OI2026-10-05: 351 OI2026-10-07: 351 OI2026-10-08: 351 OI2026-10-09: 367 OI2026-10-13: 367 OI2026-10-14: 367 OI2026-10-16: 367 OI2026-10-20: 368 OI2026-10-23: 368 OI Oct 02, 2026Oct 23, 2026

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

RCI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20263680
Oct 20, 2026Viewing368+1
Oct 16, 20263670
Oct 14, 20263670
Oct 13, 20263670
Oct 09, 2026367+16
Oct 08, 20263510
Oct 07, 20263510
Oct 05, 20263510
Oct 02, 2026351No prior observation