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Contract OI history

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Dec 18, 2026 EXPIRATION

ONTO $390.00 Call

ONTO261218C00390000

Latest saved OI660Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ONTO $390.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,0515250 2026-10-02: 1,001 OI2026-10-05: 1,001 OI2026-10-06: 1,051 OI2026-10-07: 1,051 OI2026-10-08: 1,039 OI2026-10-09: 1,029 OI2026-10-13: 1,029 OI2026-10-14: 949 OI2026-10-15: 799 OI2026-10-16: 660 OI2026-10-21: 660 OI2026-10-23: 660 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, 2026Viewing6600
Oct 21, 20266600
Oct 16, 2026660-139
Oct 15, 2026799-150
Oct 14, 2026949-80
Oct 13, 20261,0290
Oct 09, 20261,029-10
Oct 08, 20261,039-12
Oct 07, 20261,0510
Oct 06, 20261,051+50
Oct 05, 20261,0010
Oct 02, 20261,001No prior observation