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Contract OI history

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Dec 18, 2026 EXPIRATION

ENPH $17.50 Put

ENPH261218P00017500

Latest saved OI464Oct 23, 2026
Last change+8vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ENPH $17.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4642320 2026-10-09: 446 OI2026-10-13: 446 OI2026-10-14: 446 OI2026-10-15: 454 OI2026-10-16: 453 OI2026-10-21: 456 OI2026-10-23: 464 OI Oct 09, 2026Oct 23, 2026

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

ENPH contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing464+8
Oct 21, 2026456+3
Oct 16, 2026453-1
Oct 15, 2026454+8
Oct 14, 20264460
Oct 13, 20264460
Oct 09, 2026446No prior observation