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Contract OI history

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Nov 20, 2026 EXPIRATION

IBKR $85.00 Put

IBKR261120P00085000

Latest saved OI1,722Oct 23, 2026
Last change-5vs 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. 1,7278630 2026-10-09: 472 OI2026-10-13: 477 OI2026-10-14: 1,506 OI2026-10-15: 1,547 OI2026-10-16: 1,537 OI2026-10-21: 1,727 OI2026-10-23: 1,722 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, 2026Viewing1,722-5
Oct 21, 20261,727+190
Oct 16, 20261,537-10
Oct 15, 20261,547+41
Oct 14, 20261,506+1,029
Oct 13, 2026477+5
Oct 09, 2026472No prior observation