According to Milk Road (@MilkRoadDaily), major financial institutions are not only invested in the S&P 500 but also in a broad array of exchange traded products and funds, including ETFs that hold Bitcoin (BTC) and Ethereum (ETH). This diversified institutional exposure means that shifts in ETF fund flows or portfolio rebalancing can directly increase or decrease liquidity and trading volume in the crypto market. For traders, monitoring institutional ETF activity is crucial for anticipating potential volatility and cross-market contagion, as confirmed by Milk Road's June 6, 2025 post.