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Contract OI history

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Jan 21, 2028 EXPIRATION

ALT $2.50 Call

ALT280121C00002500

Latest saved OI649Oct 20, 2026
Last change-1vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALT $2.50 call open interest history 5 saved observations from 2026-10-09 to 2026-10-20. Exact values and changes are listed in the table below. 6503250 2026-10-09: 643 OI2026-10-13: 643 OI2026-10-14: 643 OI2026-10-16: 650 OI2026-10-20: 649 OI Oct 09, 2026Oct 20, 2026

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

ALT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing649-1
Oct 16, 2026650+7
Oct 14, 20266430
Oct 13, 20266430
Oct 09, 2026643No prior observation