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Contract OI history

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Dec 18, 2026 EXPIRATION

IBKR $35.00 Put

IBKR261218P00035000

Latest saved OI59Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IBKR $35.00 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. 61300 2026-10-09: 61 OI2026-10-13: 61 OI2026-10-14: 61 OI2026-10-15: 59 OI2026-10-16: 59 OI2026-10-21: 59 OI2026-10-23: 59 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, 2026Viewing590
Oct 21, 2026590
Oct 16, 2026590
Oct 15, 202659-2
Oct 14, 2026610
Oct 13, 2026610
Oct 09, 202661No prior observation