Grayscale executive Zach Pandl anticipates that Solana spot exchange-traded products (ETPs) could attract over $5 billion in inflows. This projection is based on the assumption that 5% of the underlying Solana token supply will be held in these investment vehicles. The prediction follows the recent launch of Solana ETPs by Grayscale and Bitwise. Bitwise's BSOL ETP recorded $129 million in inflows within its first two days, while Grayscale's GSOL ETP saw $4 million on its debut day. Pandl highlighted that Solana ETPs offer staking benefits, potentially setting them apart from Bitcoin ETFs. He also foresees increasing demand for diversified crypto ETPs as more single-token products become available.