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Contract OI history

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Jan 21, 2028 EXPIRATION

BTI $50.00 Put

BTI280121P00050000

Latest saved OI221Oct 23, 2026
Last change+2vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BTI $50.00 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. 2211100 2026-10-02: 220 OI2026-10-05: 220 OI2026-10-06: 220 OI2026-10-07: 220 OI2026-10-09: 220 OI2026-10-13: 220 OI2026-10-15: 220 OI2026-10-16: 220 OI2026-10-21: 219 OI2026-10-23: 221 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, 2026Viewing221+2
Oct 21, 2026219-1
Oct 16, 20262200
Oct 15, 20262200
Oct 13, 20262200
Oct 09, 20262200
Oct 07, 20262200
Oct 06, 20262200
Oct 05, 20262200
Oct 02, 2026220No prior observation