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Contract OI history

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Dec 18, 2026 EXPIRATION

B $41.00 Put

B261218P00041000

Latest saved OI747Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $41.00 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. 7473730 2026-10-02: 260 OI2026-10-05: 261 OI2026-10-06: 261 OI2026-10-07: 261 OI2026-10-08: 261 OI2026-10-09: 262 OI2026-10-13: 266 OI2026-10-14: 274 OI2026-10-15: 278 OI2026-10-16: 278 OI2026-10-21: 747 OI2026-10-23: 747 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing7470
Oct 21, 2026747+469
Oct 16, 20262780
Oct 15, 2026278+4
Oct 14, 2026274+8
Oct 13, 2026266+4
Oct 09, 2026262+1
Oct 08, 20262610
Oct 07, 20262610
Oct 06, 20262610
Oct 05, 2026261+1
Oct 02, 2026260No prior observation