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Contract OI history

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Jan 21, 2028 EXPIRATION

JANX $12.50 Put

JANX280121P00012500

Latest saved OI490Oct 23, 2026
Last change+126vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
JANX $12.50 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. 4902450 2026-10-09: 74 OI2026-10-13: 74 OI2026-10-14: 74 OI2026-10-16: 131 OI2026-10-20: 364 OI2026-10-23: 490 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, 2026Viewing490+126
Oct 20, 2026364+233
Oct 16, 2026131+57
Oct 14, 2026740
Oct 13, 2026740
Oct 09, 202674No prior observation