OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

OPEN $3.00 Call

OPEN270521C00003000

Latest saved OI1,308Oct 23, 2026
Last change+439vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OPEN $3.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,3086540 2026-10-09: 262 OI2026-10-13: 382 OI2026-10-14: 382 OI2026-10-15: 499 OI2026-10-16: 566 OI2026-10-21: 869 OI2026-10-23: 1,308 OI Oct 09, 2026Oct 23, 2026

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

OPEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,308+439
Oct 21, 2026869+303
Oct 16, 2026566+67
Oct 15, 2026499+117
Oct 14, 20263820
Oct 13, 2026382+120
Oct 09, 2026262No prior observation