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Contract OI history

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Mar 19, 2027 EXPIRATION

IBKR $85.00 Put

IBKR270319P00085000

Latest saved OI166Oct 23, 2026
Last change+2vs 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. 166830 2026-10-09: 90 OI2026-10-13: 149 OI2026-10-14: 149 OI2026-10-15: 151 OI2026-10-16: 161 OI2026-10-21: 164 OI2026-10-23: 166 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, 2026Viewing166+2
Oct 21, 2026164+3
Oct 16, 2026161+10
Oct 15, 2026151+2
Oct 14, 20261490
Oct 13, 2026149+59
Oct 09, 202690No prior observation