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Contract OI history

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Apr 16, 2027 EXPIRATION

ONON $27.50 Put

ONON270416P00027500

Latest saved OI1,023Oct 23, 2026
Last change-10vs 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. 1,0335160 2026-10-02: 1,031 OI2026-10-05: 1,033 OI2026-10-06: 1,033 OI2026-10-07: 1,033 OI2026-10-08: 1,033 OI2026-10-09: 1,032 OI2026-10-13: 1,032 OI2026-10-14: 1,032 OI2026-10-15: 1,032 OI2026-10-16: 1,032 OI2026-10-21: 1,033 OI2026-10-23: 1,023 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, 2026Viewing1,023-10
Oct 21, 20261,033+1
Oct 16, 20261,0320
Oct 15, 20261,0320
Oct 14, 20261,0320
Oct 13, 20261,0320
Oct 09, 20261,032-1
Oct 08, 20261,0330
Oct 07, 20261,0330
Oct 06, 20261,0330
Oct 05, 20261,033+2
Oct 02, 20261,031No prior observation