According to @StockMKTNewz, a weekly S&P 500 heat map covering all constituents was shared on Sep 13, 2025, providing a one-glance view of weekly winners and laggards for traders, source: @StockMKTNewz on X, Sep 13, 2025. Traders can use this heat map to benchmark their largest holdings against sector peers and the index when planning rotation and risk controls for the coming week, source: State Street Global Advisors, SPDR Sector ETFs insights on sector allocation and benchmarking. For crypto-focused investors, shifts in U.S. equity risk sentiment matter because BTC’s correlation with the S&P 500 materially increased during the 2020–2022 period, linking equity drawdowns to crypto weakness, source: International Monetary Fund, “Crypto Prices Move More in Sync With Stocks,” 2022. Monitoring sector leadership and breadth in the weekly heat map can therefore inform near-term expectations for BTC and ETH volatility around macro risk events and U.S. equity session flows, source: International Monetary Fund, 2022; @StockMKTNewz on X, Sep 13, 2025.