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Contract OI history

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Oct 23, 2026 EXPIRATION

IBKR $85.00 Put

IBKR261023P00085000

Latest saved OI156Oct 23, 2026
Last change-3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IBKR $85.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 159790 2026-10-09: 123 OI2026-10-13: 121 OI2026-10-14: 126 OI2026-10-15: 122 OI2026-10-16: 145 OI2026-10-21: 159 OI2026-10-23: 156 OI Oct 09, 2026Oct 23, 2026

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

IBKR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing156-3
Oct 21, 2026159+14
Oct 16, 2026145+23
Oct 15, 2026122-4
Oct 14, 2026126+5
Oct 13, 2026121-2
Oct 09, 2026123No prior observation