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Contract OI history

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Jan 15, 2027 EXPIRATION

BILL $40.00 Put

BILL270115P00040000

Latest saved OI3,207Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BILL $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. 3,2071,6030 2026-10-02: 282 OI2026-10-05: 282 OI2026-10-06: 282 OI2026-10-07: 282 OI2026-10-08: 3,207 OI2026-10-09: 3,207 OI2026-10-13: 3,207 OI2026-10-14: 3,207 OI2026-10-15: 3,207 OI2026-10-16: 3,207 OI2026-10-21: 3,207 OI2026-10-23: 3,207 OI Oct 02, 2026Oct 23, 2026

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

BILL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,2070
Oct 21, 20263,2070
Oct 16, 20263,2070
Oct 15, 20263,2070
Oct 14, 20263,2070
Oct 13, 20263,2070
Oct 09, 20263,2070
Oct 08, 20263,207+2,925
Oct 07, 20262820
Oct 06, 20262820
Oct 05, 20262820
Oct 02, 2026282No prior observation