US bitcoin miners, including Riot Platforms, leveraged BTC's recent price surge to raise $3.7B+ from investors since November, and used the funds to buy coins (Niamh Rowe/Financial Times)

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Niamh Rowe / Financial Times:
US bitcoin miners, including Riot Platforms, leveraged BTC's recent price surge to raise $3.7B+ from investors since November, and used the funds to buy coins  —  US-listed groups tap investors for cash as competition for resources intensifies  —  US bitcoin miners are accumulating war chests …