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Contract OI history

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Dec 18, 2026 EXPIRATION

ONTO $250.00 Call

ONTO261218C00250000

Latest saved OI119Oct 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 $250.00 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. 119590 2026-10-02: 100 OI2026-10-05: 100 OI2026-10-06: 100 OI2026-10-07: 100 OI2026-10-08: 100 OI2026-10-09: 100 OI2026-10-13: 106 OI2026-10-14: 106 OI2026-10-15: 110 OI2026-10-16: 110 OI2026-10-21: 119 OI2026-10-23: 119 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, 2026Viewing1190
Oct 21, 2026119+9
Oct 16, 20261100
Oct 15, 2026110+4
Oct 14, 20261060
Oct 13, 2026106+6
Oct 09, 20261000
Oct 08, 20261000
Oct 07, 20261000
Oct 06, 20261000
Oct 05, 20261000
Oct 02, 2026100No prior observation