Bitcoin miners dominated Thursday's close, with MARA up 13.5%
As seen on the 24/7 Wall St. homepage on September 18, 2026.
Bitcoin miners owned Thursday's close, led by Marathon Digital finishing 13.5% higher, with Cipher Mining and Iren both up 7% or more. Large-cap losses ran heavier than usual, with Qualcomm off 5.66% and General Motors down 4.93%.
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Marathon Digital was the clear standout at Thursday's close, finishing up 13.5% to $13.21, with Cipher Mining and Iren also higher and making bitcoin mining the most concentrated pocket of strength in the session.
SanDisk posted the second-largest gain among the day's movers, rising 10.69% to $1,787.02, while Coherent also closed higher in a top-five where every gainer cleared 7%.
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Qualcomm fell 5.66% to $178.02 and General Motors dropped 4.93% to $82.35, declines large enough to matter to index-level investors. Keep an eye on both stocks in the sessions ahead.
NuScale Power led the losers, falling 7.91% to $8.32, with iQIYI and Asana also lower. The sell-off spanned nuclear power, streaming, software, semiconductors, and autos, pointing to sector-specific pressure.