Morgan Stanley has officially filed S-1 registration statements with the U.S. Securities and Exchange Commission (SEC) for spot Bitcoin and Solana exchange-traded funds (ETFs). This move marks a significant expansion of a major traditional financial institution into the regulated cryptocurrency product market. The filings indicate that each trust would hold the individual cryptocurrencies, with the Solana product also allocating a portion for staking to earn rewards. This development coincides with a strong start to 2026 for existing U.S. spot Bitcoin ETFs, which saw combined net inflows of $697 million on Monday, the largest daily total since October, pushing two-day inflows to nearly $1.2 billion. This surge in institutional demand and a prominent Wall Street firm's entry into the spot crypto ETF arena are being interpreted as strong signals of increasing institutional validation and a bullish sentiment for the broader cryptocurrency market.