OITracker Cboe delayed data

Contract OI history

Back to IRON

Nov 20, 2026 EXPIRATION

IRON $30.00 Put

IRON261120P00030000

Latest saved OI2,378Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
IRON $30.00 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. 2,3781,1890 2026-10-09: 1,119 OI2026-10-13: 1,773 OI2026-10-14: 1,777 OI2026-10-16: 2,282 OI2026-10-20: 2,378 OI2026-10-23: 2,378 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, 2026Viewing2,3780
Oct 20, 20262,378+96
Oct 16, 20262,282+505
Oct 14, 20261,777+4
Oct 13, 20261,773+654
Oct 09, 20261,119No prior observation