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Contract OI history

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Mar 19, 2027 EXPIRATION

BTI $40.00 Put

BTI270319P00040000

Latest saved OI317Oct 23, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BTI $40.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3171580 2026-10-02: 306 OI2026-10-05: 306 OI2026-10-06: 306 OI2026-10-07: 306 OI2026-10-09: 306 OI2026-10-13: 306 OI2026-10-15: 317 OI2026-10-16: 317 OI2026-10-21: 317 OI2026-10-23: 317 OI Oct 02, 2026Oct 23, 2026

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

BTI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3170
Oct 21, 20263170
Oct 16, 20263170
Oct 15, 2026317+11
Oct 13, 20263060
Oct 09, 20263060
Oct 07, 20263060
Oct 06, 20263060
Oct 05, 20263060
Oct 02, 2026306No prior observation