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Contract OI history

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Dec 18, 2026 EXPIRATION

ONTO $420.00 Call

ONTO261218C00420000

Latest saved OI191Oct 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 $420.00 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. 2231110 2026-10-02: 223 OI2026-10-05: 223 OI2026-10-06: 223 OI2026-10-07: 223 OI2026-10-08: 223 OI2026-10-09: 197 OI2026-10-13: 197 OI2026-10-14: 197 OI2026-10-15: 197 OI2026-10-16: 197 OI2026-10-21: 191 OI2026-10-23: 191 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, 2026Viewing1910
Oct 21, 2026191-6
Oct 16, 20261970
Oct 15, 20261970
Oct 14, 20261970
Oct 13, 20261970
Oct 09, 2026197-26
Oct 08, 20262230
Oct 07, 20262230
Oct 06, 20262230
Oct 05, 20262230
Oct 02, 2026223No prior observation