OITracker Cboe delayed data

Contract OI history

Back to HEI

Jan 15, 2027 EXPIRATION

HEI $300.00 Put

HEI270115P00300000

Latest saved OI55Oct 20, 2026
Last change+2vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HEI $300.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 55270 2026-10-02: 49 OI2026-10-05: 49 OI2026-10-06: 50 OI2026-10-07: 51 OI2026-10-08: 53 OI2026-10-09: 53 OI2026-10-13: 53 OI2026-10-14: 53 OI2026-10-16: 53 OI2026-10-20: 55 OI Oct 02, 2026Oct 20, 2026

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

HEI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing55+2
Oct 16, 2026530
Oct 14, 2026530
Oct 13, 2026530
Oct 09, 2026530
Oct 08, 202653+2
Oct 07, 202651+1
Oct 06, 202650+1
Oct 05, 2026490
Oct 02, 202649No prior observation