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Contract OI history

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May 21, 2027 EXPIRATION

BAC $42.50 Put

BAC270521P00042500

Latest saved OI844Oct 23, 2026
Last change+264vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BAC $42.50 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. 8444220 2026-10-02: 3 OI2026-10-05: 3 OI2026-10-06: 3 OI2026-10-07: 4 OI2026-10-08: 4 OI2026-10-09: 9 OI2026-10-13: 9 OI2026-10-14: 9 OI2026-10-15: 145 OI2026-10-16: 145 OI2026-10-21: 580 OI2026-10-23: 844 OI Oct 02, 2026Oct 23, 2026

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

BAC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing844+264
Oct 21, 2026580+435
Oct 16, 20261450
Oct 15, 2026145+136
Oct 14, 202690
Oct 13, 202690
Oct 09, 20269+5
Oct 08, 202640
Oct 07, 20264+1
Oct 06, 202630
Oct 05, 202630
Oct 02, 20263No prior observation