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Contract OI history

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Mar 19, 2027 EXPIRATION

ONTO $320.00 Call

ONTO270319C00320000

Latest saved OI15Oct 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 $320.00 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. 1570 2026-10-02: 7 OI2026-10-05: 6 OI2026-10-06: 11 OI2026-10-07: 11 OI2026-10-08: 12 OI2026-10-09: 12 OI2026-10-13: 12 OI2026-10-14: 12 OI2026-10-15: 12 OI2026-10-16: 13 OI2026-10-21: 15 OI2026-10-23: 15 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, 2026Viewing150
Oct 21, 202615+2
Oct 16, 202613+1
Oct 15, 2026120
Oct 14, 2026120
Oct 13, 2026120
Oct 09, 2026120
Oct 08, 202612+1
Oct 07, 2026110
Oct 06, 202611+5
Oct 05, 20266-1
Oct 02, 20267No prior observation