OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

HRTX $500.00 Call

HRTX261218C00000500

Latest saved OI2,966Oct 23, 2026
Last change+5vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
HRTX $500.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2,9661,4830 2026-10-09: 2,146 OI2026-10-13: 2,446 OI2026-10-14: 2,461 OI2026-10-16: 2,461 OI2026-10-20: 2,961 OI2026-10-23: 2,966 OI Oct 09, 2026Oct 23, 2026

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

HRTX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,966+5
Oct 20, 20262,961+500
Oct 16, 20262,4610
Oct 14, 20262,461+15
Oct 13, 20262,446+300
Oct 09, 20262,146No prior observation