According to @KobeissiLetter, the S&P 500 reached 6,600 for the first time and is up 36% from its April 2025 bottom, marking one of the strongest five-month rallies in U.S. history. Source: The Kobeissi Letter on X, Sep 12, 2025. For traders, a fresh SPX all-time high reinforces a risk-on regime where crypto and equities have historically moved more in sync; the IMF documented that BTC–S&P 500 correlations rose markedly during 2020–2021, making it prudent to monitor BTC and ETH beta to equities when stocks surge. Sources: The Kobeissi Letter on X, Sep 12, 2025; International Monetary Fund, Jan 2022, Crypto Prices Move More in Sync With Stocks.

According to @KobeissiLetter on X, posted Sep 9, 2025, the combined weight of S&P 500 constituents with at least 3% share of the index has reached roughly 32%, tripling in eight years. Source: @KobeissiLetter on X, Sep 9, 2025. At the 2000 dot-com peak, this figure was below 10%, underscoring unprecedented concentration today. Source: @KobeissiLetter on X, Sep 9, 2025. Six companies now each exceed a 3% index weight, and NVDA alone represents about 8% of the S&P 500’s market value, both cited as records. Source: @KobeissiLetter on X, Sep 9, 2025. Higher index concentration increases sensitivity of the S&P 500 to single-stock earnings and guidance shocks, as documented by S&P Dow Jones Indices’ research on concentration risk. Source: S&P Dow Jones Indices, 2023 analysis on S&P 500 concentration risk. For crypto traders, elevated equity concentration matters because Bitcoin and U.S. equities have exhibited higher return correlations since 2020, implying spillover potential from mega-cap tech moves to BTC and ETH. Source: IMF Blog, Crypto Prices Move More in Sync With Stocks, Jan 11, 2022.

According to @StockMKTNewz, Jefferies raised its 2025 year-end S&P 500 target to 6,600 from 5,600, an approximately 18% increase versus the prior target based on the figures reported (source: @StockMKTNewz). For crypto-focused traders, equity target upgrades align with periods when BTC and U.S. equities have shown positive 90-day rolling correlation in 2023–2024, a cross-asset dynamic documented by market data providers (sources: Kaiko, Coin Metrics).

According to @StockMKTNewz, the total combined value of the S&P 500 reached a new all-time high of $57.3 trillion, source: @StockMKTNewz on X dated August 14, 2025. BTC and ETH have shown time-varying positive correlations with US equities, with correlations rising to multi-year highs in 2022 and moderating through 2024, making equity milestones relevant for crypto risk positioning, source: Kaiko Research 2024 and IMF Global Financial Stability Note 2022. Traders can monitor BTC and ETH correlation and beta versus the S&P 500 around macro catalysts to gauge potential spillovers between equities and crypto, as documented in cross-asset regime analyses, source: Kaiko Research 2024.