OITracker Cboe delayed data

Contract OI history

Back to HCA

Dec 18, 2026 EXPIRATION

HCA $380.00 Put

HCA261218P00380000

Latest saved OI998Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HCA $380.00 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. 9994990 2026-10-02: 999 OI2026-10-05: 999 OI2026-10-06: 999 OI2026-10-07: 999 OI2026-10-08: 999 OI2026-10-09: 999 OI2026-10-13: 998 OI2026-10-14: 998 OI2026-10-15: 998 OI2026-10-16: 998 OI2026-10-21: 998 OI2026-10-23: 998 OI Oct 02, 2026Oct 23, 2026

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

HCA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20269980
Oct 21, 2026Viewing9980
Oct 16, 20269980
Oct 15, 20269980
Oct 14, 20269980
Oct 13, 2026998-1
Oct 09, 20269990
Oct 08, 20269990
Oct 07, 20269990
Oct 06, 20269990
Oct 05, 20269990
Oct 02, 2026999No prior observation