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Contract OI history

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Jan 21, 2028 EXPIRATION

BCS $20.00 Put

BCS280121P00020000

Latest saved OI600Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BCS $20.00 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. 6003000 2026-10-02: 597 OI2026-10-05: 597 OI2026-10-06: 597 OI2026-10-07: 595 OI2026-10-08: 595 OI2026-10-09: 595 OI2026-10-13: 596 OI2026-10-14: 596 OI2026-10-15: 596 OI2026-10-16: 596 OI2026-10-21: 600 OI2026-10-23: 600 OI Oct 02, 2026Oct 23, 2026

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

BCS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing6000
Oct 21, 2026600+4
Oct 16, 20265960
Oct 15, 20265960
Oct 14, 20265960
Oct 13, 2026596+1
Oct 09, 20265950
Oct 08, 20265950
Oct 07, 2026595-2
Oct 06, 20265970
Oct 05, 20265970
Oct 02, 2026597No prior observation