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Contract OI history

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May 21, 2027 EXPIRATION

CHPT $4.00 Put

CHPT270521P00004000

Latest saved OI100Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CHPT $4.00 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. 100500 2026-10-02: 80 OI2026-10-05: 80 OI2026-10-06: 80 OI2026-10-07: 80 OI2026-10-08: 80 OI2026-10-09: 80 OI2026-10-13: 80 OI2026-10-14: 80 OI2026-10-15: 80 OI2026-10-16: 80 OI2026-10-21: 100 OI2026-10-23: 100 OI Oct 02, 2026Oct 23, 2026

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

CHPT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1000
Oct 21, 2026100+20
Oct 16, 2026800
Oct 15, 2026800
Oct 14, 2026800
Oct 13, 2026800
Oct 09, 2026800
Oct 08, 2026800
Oct 07, 2026800
Oct 06, 2026800
Oct 05, 2026800
Oct 02, 202680No prior observation