OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

ON $55.00 Call

ON270115C00055000

Latest saved OI528Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ON $55.00 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. 5282640 2026-10-09: 527 OI2026-10-13: 527 OI2026-10-14: 527 OI2026-10-15: 527 OI2026-10-16: 527 OI2026-10-21: 528 OI2026-10-23: 528 OI Oct 09, 2026Oct 23, 2026

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

ON contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5280
Oct 21, 2026528+1
Oct 16, 20265270
Oct 15, 20265270
Oct 14, 20265270
Oct 13, 20265270
Oct 09, 2026527No prior observation