Archer Aviation Inc. (ACHR) experienced a significant intraday decline of 7.85% on Tuesday, as investors reacted negatively to the company's latest financial outlook.

The electric vertical takeoff and landing (eVTOL) aircraft maker reported a fourth-quarter EBITDA loss of $137.9 million, which was slightly wider than analysts' expectations. However, the primary driver of the stock's decline was the company's guidance for the first quarter of 2026, projecting an EBITDA loss between $160 million and $180 million. This forecast significantly exceeds Wall Street's expectations of approximately $110 million, indicating higher-than-anticipated spending for early 2026.

The disappointing guidance overshadowed other aspects of the company's report and raised concerns about the near-term financial trajectory of the eVTOL manufacturer as it works toward commercial service goals.