Riot Slips as Miners Fade
No clear negative news explains the drop, and the loan payoff headline is neutral to mildly positive, so this looks like technical selling or profit-taking in bitcoin miners, with the stock moving against a flat-to-up market.
Sources: https://blockonomi.com/bitcoin-miner-riot-platforms-pays-off-coinbase-loan-frees-5821-btc-collateral/
Sources
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