OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

OPEN $3.00 Put

OPEN270521P00003000

Latest saved OI223Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OPEN $3.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2231110 2026-10-09: 81 OI2026-10-13: 86 OI2026-10-14: 86 OI2026-10-15: 86 OI2026-10-16: 219 OI2026-10-21: 221 OI2026-10-23: 223 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, 2026Viewing223+2
Oct 21, 2026221+2
Oct 16, 2026219+133
Oct 15, 2026860
Oct 14, 2026860
Oct 13, 202686+5
Oct 09, 202681No prior observation