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Contract OI history

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Nov 20, 2026 EXPIRATION

ONON $27.50 Put

ONON261120P00027500

Latest saved OI7,287Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ONON $27.50 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. 7,5373,7680 2026-10-02: 5,876 OI2026-10-05: 5,936 OI2026-10-06: 7,042 OI2026-10-07: 7,000 OI2026-10-08: 7,000 OI2026-10-09: 7,537 OI2026-10-13: 7,410 OI2026-10-14: 7,410 OI2026-10-15: 7,409 OI2026-10-16: 7,319 OI2026-10-21: 7,286 OI2026-10-23: 7,287 OI Oct 02, 2026Oct 23, 2026

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

ONON contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing7,287+1
Oct 21, 20267,286-33
Oct 16, 20267,319-90
Oct 15, 20267,409-1
Oct 14, 20267,4100
Oct 13, 20267,410-127
Oct 09, 20267,537+537
Oct 08, 20267,0000
Oct 07, 20267,000-42
Oct 06, 20267,042+1,106
Oct 05, 20265,936+60
Oct 02, 20265,876No prior observation