The latest data point from 2026-05-29 shows short interest at 16.87%, remaining unchanged from the previous period on 2026-05-15. Short interest for ACHR fluctuated between 13.10% and 16.87% from 2025-12-15 to 2026-05-29, with an overall upward trend marked by notable volatility. The metric declined to a low of 13.10% in late February 2026 before climbing steadily through March and April, reaching its peak of 16.87% by mid-May 2026 and holding steady through the end of the period.