Shares of Archer Aviation Inc. (NYSE: ACHR) tumbled 5.03% in pre-market trading on Tuesday, following the release of its disappointing second-quarter earnings report. The electric vertical takeoff and landing (eVTOL) aircraft company's financial results fell short of analyst expectations, raising concerns about its near-term financial performance.

Archer reported a second-quarter loss of $0.36 per share, significantly missing analyst estimates of a $0.26 per share loss. This represents a 39.53% larger loss than expected and a 12.5% increase from the $0.32 per share loss reported in the same period last year. The company's widening losses reflect ongoing investments in its Midnight aircraft program and other operational expenses.

Adding to investor concerns, Archer provided weak guidance for the third quarter, projecting an adjusted EBITDA loss between $110 million and $130 million. This outlook suggests continued significant cash burn as the company works towards commercializing its air taxi technology. Despite reporting a strong liquidity position with $1.72 billion in cash and cash equivalents, the market appears focused on the company's widening losses and the uncertain path to profitability.

While Archer highlighted some operational progress, including the production of six Midnight aircraft across its supply chain and its selection as the Official Air Taxi Provider for the LA28 Olympic Games, these developments were overshadowed by the financial performance. The pre-market plunge indicates that investors are reassessing the company's valuation in light of its current financial trajectory and the challenges ahead in the emerging eVTOL market.