OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

OPEN $2.00 Call

OPEN270521C00002000

Latest saved OI540Oct 23, 2026
Last change+335vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OPEN $2.00 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. 5402700 2026-10-09: 125 OI2026-10-13: 145 OI2026-10-14: 145 OI2026-10-15: 232 OI2026-10-16: 207 OI2026-10-21: 205 OI2026-10-23: 540 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, 2026Viewing540+335
Oct 21, 2026205-2
Oct 16, 2026207-25
Oct 15, 2026232+87
Oct 14, 20261450
Oct 13, 2026145+20
Oct 09, 2026125No prior observation