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Contract OI history

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Nov 20, 2026 EXPIRATION

HRB $40.00 Call

HRB261120C00040000

Latest saved OI434Oct 23, 2026
Last change+7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HRB $40.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4342170 2026-10-02: 350 OI2026-10-05: 350 OI2026-10-06: 352 OI2026-10-07: 352 OI2026-10-08: 352 OI2026-10-09: 352 OI2026-10-13: 347 OI2026-10-14: 427 OI2026-10-15: 427 OI2026-10-16: 427 OI2026-10-21: 427 OI2026-10-23: 434 OI Oct 02, 2026Oct 23, 2026

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

HRB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing434+7
Oct 21, 20264270
Oct 16, 20264270
Oct 15, 20264270
Oct 14, 2026427+80
Oct 13, 2026347-5
Oct 09, 20263520
Oct 08, 20263520
Oct 07, 20263520
Oct 06, 2026352+2
Oct 05, 20263500
Oct 02, 2026350No prior observation