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Contract OI history

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May 21, 2027 EXPIRATION

BORR $4.00 Put

BORR270521P00004000

Latest saved OI1,616Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BORR $4.00 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. 1,6168080 2026-10-02: 27 OI2026-10-05: 27 OI2026-10-06: 27 OI2026-10-07: 27 OI2026-10-08: 27 OI2026-10-09: 125 OI2026-10-13: 150 OI2026-10-14: 350 OI2026-10-15: 353 OI2026-10-16: 353 OI2026-10-21: 1,613 OI2026-10-23: 1,616 OI Oct 02, 2026Oct 23, 2026

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

BORR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,616+3
Oct 21, 20261,613+1,260
Oct 16, 20263530
Oct 15, 2026353+3
Oct 14, 2026350+200
Oct 13, 2026150+25
Oct 09, 2026125+98
Oct 08, 2026270
Oct 07, 2026270
Oct 06, 2026270
Oct 05, 2026270
Oct 02, 202627No prior observation