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Contract OI history

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Oct 23, 2026 EXPIRATION

HPQ $28.50 Put

HPQ261023P00028500

Latest saved OI540Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HPQ $28.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5422710 2026-10-02: 223 OI2026-10-05: 224 OI2026-10-06: 224 OI2026-10-07: 224 OI2026-10-08: 224 OI2026-10-09: 317 OI2026-10-13: 479 OI2026-10-14: 479 OI2026-10-15: 489 OI2026-10-16: 537 OI2026-10-21: 542 OI2026-10-23: 540 OI Oct 02, 2026Oct 23, 2026

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

HPQ contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing540-2
Oct 21, 2026542+5
Oct 16, 2026537+48
Oct 15, 2026489+10
Oct 14, 20264790
Oct 13, 2026479+162
Oct 09, 2026317+93
Oct 08, 20262240
Oct 07, 20262240
Oct 06, 20262240
Oct 05, 2026224+1
Oct 02, 2026223No prior observation