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Contract OI history

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Jan 21, 2028 EXPIRATION

ENPH $40.00 Put

ENPH280121P00040000

Latest saved OI1,493Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ENPH $40.00 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. 1,4937460 2026-10-09: 1,491 OI2026-10-13: 1,491 OI2026-10-14: 1,491 OI2026-10-15: 1,492 OI2026-10-16: 1,493 OI2026-10-21: 1,493 OI2026-10-23: 1,493 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, 2026Viewing1,4930
Oct 21, 20261,4930
Oct 16, 20261,493+1
Oct 15, 20261,492+1
Oct 14, 20261,4910
Oct 13, 20261,4910
Oct 09, 20261,491No prior observation