According to @charliebilello, the latest update highlights the worst performing stocks in the S&P 500 this year, signaling which equity names have led YTD underperformance in the index. Source: Charlie Bilello X post Sep 21 2025. With Bitcoin and US equities showing increased co-movement since 2020, periods of stock market weakness have historically coincided with pressure in BTC and ETH, making equity laggards relevant for cross-asset risk monitoring. Source: International Monetary Fund 2022 report Crypto Prices Move More in Sync with Stocks.