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Contract OI history

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Jan 15, 2027 EXPIRATION

BOX $35.00 Put

BOX270115P00035000

Latest saved OI143Oct 23, 2026
Last change+10vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BOX $35.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 143710 2026-10-02: 27 OI2026-10-05: 27 OI2026-10-06: 27 OI2026-10-07: 28 OI2026-10-08: 28 OI2026-10-13: 28 OI2026-10-14: 90 OI2026-10-15: 91 OI2026-10-16: 132 OI2026-10-20: 133 OI2026-10-23: 143 OI Oct 02, 2026Oct 23, 2026

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

BOX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing143+10
Oct 20, 2026133+1
Oct 16, 2026132+41
Oct 15, 202691+1
Oct 14, 202690+62
Oct 13, 2026280
Oct 08, 2026280
Oct 07, 202628+1
Oct 06, 2026270
Oct 05, 2026270
Oct 02, 202627No prior observation