According to @StockMKTNewz, an opening snapshot covering all S&P 500 constituents was shared, letting traders see how every stock started trading today for immediate market breadth and top movers analysis, source: @StockMKTNewz on X, Jan 5, 2026. Such at-the-open breadth views help identify early top gainers and decliners, sector leadership, and gap movers that inform intraday setups, source: Investopedia Advance-Decline Line and market breadth references. Broad-based equity strength or weakness at the open is a useful risk-appetite read-through that often aligns with short-term moves in BTC and ETH as stock–crypto correlations have risen since 2020, source: IMF Blog Crypto Prices Move More in Sync With Stocks Jan 2022 and BIS research on increasing crypto–equity co-movement 2022. Traders can also cross-check S&P 500 breadth against crypto-exposed equities such as Coinbase Global (COIN) and MicroStrategy (MSTR) for confirmation signals without implying causation, source: Coinbase Global investor relations overview and MicroStrategy SEC filings describing BTC treasury strategy.