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Contract OI history

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Nov 20, 2026 EXPIRATION

IRON $35.00 Put

IRON261120P00035000

Latest saved OI732Oct 23, 2026
Last change-25vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IRON $35.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 7573780 2026-10-09: 514 OI2026-10-13: 656 OI2026-10-14: 656 OI2026-10-16: 756 OI2026-10-20: 757 OI2026-10-23: 732 OI Oct 09, 2026Oct 23, 2026

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

IRON contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing732-25
Oct 20, 2026757+1
Oct 16, 2026756+100
Oct 14, 20266560
Oct 13, 2026656+142
Oct 09, 2026514No prior observation