OITracker Cboe delayed data

Contract OI history

Back to IRON

Nov 20, 2026 EXPIRATION

IRON $75.00 Put

IRON261120P00075000

Latest saved OI428Oct 23, 2026
Last change-113vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IRON $75.00 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. 5412700 2026-10-09: 229 OI2026-10-13: 229 OI2026-10-14: 229 OI2026-10-16: 229 OI2026-10-20: 541 OI2026-10-23: 428 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, 2026Viewing428-113
Oct 20, 2026541+312
Oct 16, 20262290
Oct 14, 20262290
Oct 13, 20262290
Oct 09, 2026229No prior observation