OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

U $38.00 Put

U280121P00038000

Latest saved OI349Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
U $38.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3491740 2026-10-02: 345 OI2026-10-05: 345 OI2026-10-06: 345 OI2026-10-07: 345 OI2026-10-08: 345 OI2026-10-09: 345 OI2026-10-14: 345 OI2026-10-15: 345 OI2026-10-16: 345 OI2026-10-21: 349 OI2026-10-23: 349 OI Oct 02, 2026Oct 23, 2026

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

U contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20263490
Oct 21, 2026Viewing349+4
Oct 16, 20263450
Oct 15, 20263450
Oct 14, 20263450
Oct 09, 20263450
Oct 08, 20263450
Oct 07, 20263450
Oct 06, 20263450
Oct 05, 20263450
Oct 02, 2026345No prior observation