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Contract OI history

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May 21, 2027 EXPIRATION

JANX $20.00 Put

JANX270521P00020000

Latest saved OI88Oct 23, 2026
Last change+44vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
JANX $20.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 88440 2026-10-09: 23 OI2026-10-13: 23 OI2026-10-14: 47 OI2026-10-16: 44 OI2026-10-20: 44 OI2026-10-23: 88 OI Oct 09, 2026Oct 23, 2026

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

JANX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing88+44
Oct 20, 2026440
Oct 16, 202644-3
Oct 14, 202647+24
Oct 13, 2026230
Oct 09, 202623No prior observation