OITracker Cboe delayed data

Contract OI history

Back to RARE

Dec 18, 2026 EXPIRATION

RARE $20.00 Call

RARE261218C00020000

Latest saved OI2,526Oct 23, 2026
Last change+49vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
RARE $20.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 2,5261,2630 2026-10-08: 2,486 OI2026-10-09: 2,486 OI2026-10-12: 2,478 OI2026-10-14: 2,477 OI2026-10-16: 2,477 OI2026-10-20: 2,477 OI2026-10-23: 2,526 OI Oct 08, 2026Oct 23, 2026

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

RARE contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,526+49
Oct 20, 20262,4770
Oct 16, 20262,4770
Oct 14, 20262,477-1
Oct 12, 20262,478-8
Oct 09, 20262,4860
Oct 08, 20262,486No prior observation