According to @StockMKTNewz, a daily snapshot of U.S. stock market performance for Dec 4, 2025 was posted on X, highlighting the day’s sector and index moves without disclosing specific figures (source: @StockMKTNewz, Dec 4, 2025). Historically, equity trend days in the U.S. have shown positive same‑day co‑movement with crypto, with the BTC–S&P 500 correlation rising to around 0.36 in 2020–21 versus near zero in 2017–19 (source: International Monetary Fund, Iyer and Boz, Crypto Prices Move More in Sync with Stocks, 2022). Given strengthened cross‑asset spillovers since 2020, crypto traders can use SPX/NDX futures during U.S. hours as risk‑on/off cues for BTC and ETH execution and hedging (source: Bank for International Settlements, Bulletin No. 57, 2022).