According to @KobeissiLetter, the top 10 US stocks now account for 41.4% of the S&P 500’s market cap, an all-time high, indicating a highly concentrated index profile, source: @KobeissiLetter. @KobeissiLetter reports this share has risen by 6.2 percentage points since April 2025 and by 8.4 points since January 2024, highlighting rapid concentration gains over 18 months, source: @KobeissiLetter. @KobeissiLetter also notes the top 10’s combined market value has surpassed $25 trillion for the first time, now equal to 83% of the size of the US economy, underscoring Big Tech’s outsized weight in index performance and risk attribution, source: @KobeissiLetter. For traders, this data flags elevated concentration risk in S&P 500 exposure where a small cohort drives returns and drawdowns, making breadth-sensitive strategies and risk controls more critical, source: @KobeissiLetter.

According to Ai 姨 (@ai_9684xtpa), in 2015 the US stock market capitalization was 24 trillion versus the crypto market’s roughly 40 billion, a gap of about 6000 times (source: Ai 姨 @ai_9684xtpa on X, Aug 11, 2025). According to Ai 姨 (@ai_9684xtpa), by 2025 the US stock market is 63 trillion and crypto about 4 trillion, narrowing the gap to roughly 16 times (source: Ai 姨 @ai_9684xtpa on X, Aug 11, 2025). According to Ai 姨 (@ai_9684xtpa), crypto-concept equities total 3.28 trillion in market cap, BTC reserves sum to 436.6 billion, ETH reserves to 12.6 billion, and 121 US-listed companies are building crypto reserves (source: Ai 姨 @ai_9684xtpa on X, Aug 11, 2025). Based on these figures reported by Ai 姨 (@ai_9684xtpa), the equity-crypto gap compressed from roughly 6000x to roughly 16x over 2015–2025, a trading-relevant benchmark of rising integration between public equities and digital assets (source: Ai 姨 @ai_9684xtpa on X, Aug 11, 2025).