OITracker Cboe delayed data

Contract OI history

Back to RARE

Jan 21, 2028 EXPIRATION

RARE $17.50 Put

RARE280121P00017500

Latest saved OI316Oct 23, 2026
Last change+292vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
RARE $17.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 3161580 2026-10-08: 24 OI2026-10-09: 24 OI2026-10-12: 24 OI2026-10-14: 24 OI2026-10-16: 24 OI2026-10-20: 24 OI2026-10-23: 316 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, 2026Viewing316+292
Oct 20, 2026240
Oct 16, 2026240
Oct 14, 2026240
Oct 12, 2026240
Oct 09, 2026240
Oct 08, 202624No prior observation