OITracker Cboe delayed data

Contract OI history

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Mar 17, 2028 EXPIRATION

OPEN $4.00 Call

OPEN280317C00004000

Latest saved OI200Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OPEN $4.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2001000 2026-10-09: 186 OI2026-10-13: 186 OI2026-10-14: 186 OI2026-10-15: 186 OI2026-10-16: 186 OI2026-10-21: 200 OI2026-10-23: 200 OI Oct 09, 2026Oct 23, 2026

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

OPEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2000
Oct 21, 2026200+14
Oct 16, 20261860
Oct 15, 20261860
Oct 14, 20261860
Oct 13, 20261860
Oct 09, 2026186No prior observation