Riot Platforms is trading 4.3% lower at $13.46 as crypto weakness weighs on crypto-linked shares. - Bitcoin is down 3.30% since the prior close, while Ethereum is down 3.63%. - Broader markets are weaker: the Nasdaq is down 1.63% and the S&P 500 is down 0.82%. - No clear Riot-specific catalyst surfaced; its latest company news was an October 20 notice scheduling its Q3 earnings call for November 4. The move appears consistent with crypto weakness and risk-off trading.