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Contract OI history

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Jan 15, 2027 EXPIRATION

ONTO $190.00 Put

ONTO270115P00190000

Latest saved OI290Oct 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
ONTO $190.00 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. 2901450 2026-10-02: 9 OI2026-10-05: 9 OI2026-10-06: 9 OI2026-10-07: 9 OI2026-10-08: 9 OI2026-10-09: 9 OI2026-10-13: 9 OI2026-10-14: 9 OI2026-10-15: 284 OI2026-10-16: 284 OI2026-10-21: 289 OI2026-10-23: 290 OI Oct 02, 2026Oct 23, 2026

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

ONTO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing290+1
Oct 21, 2026289+5
Oct 16, 20262840
Oct 15, 2026284+275
Oct 14, 202690
Oct 13, 202690
Oct 09, 202690
Oct 08, 202690
Oct 07, 202690
Oct 06, 202690
Oct 05, 202690
Oct 02, 20269No prior observation