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Contract OI history

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Dec 18, 2026 EXPIRATION

HRB $45.00 Put

HRB261218P00045000

Latest saved OI4,741Oct 23, 2026
Last change+2,332vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
HRB $45.00 put open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 4,7412,3700 2026-10-15: 0 OI2026-10-16: 0 OI2026-10-21: 2,409 OI2026-10-23: 4,741 OI Oct 15, 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, 2026Viewing4,741+2,332
Oct 21, 20262,409+2,409
Oct 16, 202600
Oct 15, 20260No prior observation