According to @username on Twitter, the S&P 500 index has risen 2.5% so far in 2025, signaling a strong start for US equities. Historically, positive momentum in the S&P 500 tends to boost investor confidence across risk assets, including leading cryptocurrencies like Bitcoin and Ethereum. Traders should monitor potential capital flows from equities to crypto, as sustained gains in the stock market often precede increased risk appetite in digital assets. This correlation is supported by @username's data and previous market cycles.