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Contract OI history

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Nov 20, 2026 EXPIRATION

ALTO $4.00 Put

ALTO261120P00004000

Latest saved OI39Oct 20, 2026
Last change0vs previous saved observation
Saved market days5Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ALTO $4.00 put open interest history 5 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 39190 2026-10-08: 17 OI2026-10-13: 18 OI2026-10-15: 19 OI2026-10-16: 39 OI2026-10-20: 39 OI Oct 08, 2026Oct 20, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ALTO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing390
Oct 16, 202639+20
Oct 15, 202619+1
Oct 13, 202618+1
Oct 08, 202617No prior observation