Morgan Stanley Files Third MSOL and MSSE Amendment as Analyst Says Launch Is

Morgan Stanley filed amended registration statements with the SEC on July 15, 2026 for its proposed SOL (SOL) and Ethereum (ETH) exchange-traded funds. Bloomberg ETF analyst James Seyffart said the filings signal that a launch is "pretty close," per Benzinga.

The two products, the Morgan Stanley Solana Trust ETF (MSOL) and the Morgan Stanley Ethereum Trust ETF (MSSE), are both slated to list on NYSE Arca at a 0.14% annual management fee. Neither filing is yet effective and Morgan Stanley has not announced a launch date.

What Changed in the July 15 Amendment

This is the latest in a series of S-1 amendments for both products. The July 15 filing, available on EDGAR, revised the delegated sponsor designation to Coinbase Prime and updated associated custodial and trade finance agreements. The underlying economics from the June 19 filings are unchanged: the 0.14% fee and full staking structure remain in place.

Bank of New York Mellon and Coinbase cbBTC$79,466.05-0.9% Coinbase Custody serve as dual custodians.

MSOL Staking: 100% of SOL Holdings, 95% of Rewards Flow to Shareholders

Staking mechanics in the S-1 are spelled out in detail. Per the filing, MSOL plans to stake up to 100% of its Solana holdings; MSSE targets 50% to 80% of its Ether holdings. Three providers handle staking operations: Figment Figment, Galaxy Digital Galaxy Digital's blockchain infrastructure arm, and Coinbase Canada.

Staking providers and custodians together receive a combined 5% of gross staking rewards, per the filing, and the remaining 95% accrues to the trust's net asset value and flows to shareholders. Readers wanting deeper context on Morgan Stanley and Galaxy Digital's prior institutional crypto work can see our earlier coverage.

At 0.14%, both ETFs undercut Grayscale's Mini Ethereum Trust (0.15%) and Franklin Templeton's SOEZ Solana fund (0.19%), according to CryptoBriefing.

MSBT's $380M in Inflows Sets the Institutional Baseline

Morgan Stanley's Bitcoin Trust (MSBT), which launched in April 2026, has drawn over $380 million in net inflows, per Benzinga, since launch. That performance establishes a demand baseline for the firm's broader crypto ETF ambitions and shows the iterative amendment process can translate into a commercial product.

The staking feature sets MSOL apart from the standard spot Solana ETF design, which holds SOL but passes no on-chain yield to shareholders. An investor holding MSOL would receive both price exposure to SOL and a share of the network's staking rewards, without managing a validator or custody directly.

Both MSOL and MSSE remain in the registration phase. SEC effectiveness is required before either fund can begin trading.