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Contract OI history

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Dec 18, 2026 EXPIRATION

IBKR $85.00 Put

IBKR261218P00085000

Latest saved OI963Oct 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. 9664830 2026-10-09: 673 OI2026-10-13: 852 OI2026-10-14: 864 OI2026-10-15: 926 OI2026-10-16: 932 OI2026-10-21: 966 OI2026-10-23: 963 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, 2026Viewing963-3
Oct 21, 2026966+34
Oct 16, 2026932+6
Oct 15, 2026926+62
Oct 14, 2026864+12
Oct 13, 2026852+179
Oct 09, 2026673No prior observation