Premarket Movers | Quantum Computing Surges 16%; Harmonic Jumps 14%; Plug Power Rises 7%; AST SpaceMobile Sinks 12%

Quantum Computing shares surged 15.6% in premarket trading after the company reported earnings for its first quarter of Fiscal Year 2026. Earnings per share came in at -$0.02, which beat analysts’ consensus estimate of -$0.05 per share. In addition, sales increased significantly year-over-year, with revenue hitting $3.7 million versus the $39,000 in Q1 2025. This beat analysts’ expectations of $3.13 million. This revenue jump is mainly due to QUBT’s acquisitions of Luminar Semiconductor in February and NuCrypt in March.

Harmonic reported its first quarter 2026 results after the bell today, delivering a substantial beat on both the top and bottom lines that sent shares surging 14.1% in premarket trading, reflecting investor enthusiasm for the company's accelerating broadband revenue growth and an upward revision to its full-year outlook.

Plug Power reported its first-quarter results for 2026 after the bell on Monday, beating Wall Street’s top- and bottom-line estimates and sending shares up 6.5% in premarket trading. The company posted revenue of $163.5 million, a 22% increase year-over-year, which came in ahead of the consensus analyst estimate of approximately $144 million. On an adjusted basis, Plug Power reported a loss per share of ($0.08), narrower than the ($0.0963) loss that analysts had expected and a significant improvement from the ($0.17) adjusted loss reported in the same quarter a year ago.

Rigetti Computing shares fell 1.3% in premarket trading after the quantum computing firm reported first-quarter results that were largely in line with Wall Street's estimates.

MARA Holdings shares dropped 4.4% in premarket trading as the digital infrastructure company reported first-quarter earnings that fell short of analyst expectations due to a loss related to the fair value of digital assets.

CleanSpark stock sank 9.6% in premarket trading after the bitcoin mining and data center developer company delivered fiscal Q2 results that missed the consensus estimates by a wide margin.

AST SpaceMobile shares fell 11.9% in premarket trading following the release of its first-quarter financial results. The satellite designer reported a loss that significantly exceeded Wall Street expectations, overshadowing news of regulatory progress and upcoming launch milestones.

Hims & Hers Health missed Wall Street estimates for first-quarter revenue and posted a surprise loss, ​as the telehealth company's shift toward branded GLP-1 weight-loss drugs pressured its margins and domestic sales. Shares of the ‌company fell sank 16% in premarket trading.