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Contract OI history

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Jan 21, 2028 EXPIRATION

AMPG $5.00 Put

AMPG280121P00005000

Latest saved OI38Oct 20, 2026
Last change+18vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
AMPG $5.00 put open interest history 6 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 38190 2026-10-08: 20 OI2026-10-09: 20 OI2026-10-13: 20 OI2026-10-14: 20 OI2026-10-16: 20 OI2026-10-20: 38 OI Oct 08, 2026Oct 20, 2026

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

AMPG contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing38+18
Oct 16, 2026200
Oct 14, 2026200
Oct 13, 2026200
Oct 09, 2026200
Oct 08, 202620No prior observation