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Contract OI history

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Dec 18, 2026 EXPIRATION

ONTO $400.00 Call

ONTO261218C00400000

Latest saved OI542Oct 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 $400.00 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. 5762880 2026-10-02: 576 OI2026-10-05: 569 OI2026-10-06: 569 OI2026-10-07: 551 OI2026-10-08: 551 OI2026-10-09: 551 OI2026-10-13: 551 OI2026-10-14: 551 OI2026-10-15: 551 OI2026-10-16: 550 OI2026-10-21: 542 OI2026-10-23: 542 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, 2026Viewing5420
Oct 21, 2026542-8
Oct 16, 2026550-1
Oct 15, 20265510
Oct 14, 20265510
Oct 13, 20265510
Oct 09, 20265510
Oct 08, 20265510
Oct 07, 2026551-18
Oct 06, 20265690
Oct 05, 2026569-7
Oct 02, 2026576No prior observation