OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

OKLO $40.00 Put

OKLO280121P00040000

Latest saved OI2,291Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
OKLO $40.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,3151,1570 2026-10-02: 2,175 OI2026-10-05: 2,175 OI2026-10-06: 2,174 OI2026-10-07: 2,176 OI2026-10-08: 2,176 OI2026-10-09: 2,184 OI2026-10-13: 2,180 OI2026-10-14: 2,180 OI2026-10-15: 2,315 OI2026-10-16: 2,299 OI2026-10-21: 2,293 OI2026-10-23: 2,291 OI Oct 02, 2026Oct 23, 2026

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

OKLO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,291-2
Oct 21, 20262,293-6
Oct 16, 20262,299-16
Oct 15, 20262,315+135
Oct 14, 20262,1800
Oct 13, 20262,180-4
Oct 09, 20262,184+8
Oct 08, 20262,1760
Oct 07, 20262,176+2
Oct 06, 20262,174-1
Oct 05, 20262,1750
Oct 02, 20262,175No prior observation