Morgan Stanley filed amended registration statements on June 18 for proposed Ethereum and Solana ETF trusts, establishing a 0.14% annual delegated sponsor fee for both products. Bloomberg senior ETF analyst Eric Balchunas identified this rate as the lowest globally for ETH and SOL products. The proposed ETH trust, set to trade on NYSE Arca under the ticker MSSE, aims to track ether alongside staking rewards from a portion of its holdings.

Concurrently, the SOL trust, designated MSOL, intends to stake up to 100% of its Solana holdings. This 14 basis points fee structure signals Morgan Stanley's strategic positioning for the evolving institutional allocation conversation, framing these products as foundational portfolio blocks before a broadly accepted allocation standard emerges.

The SOL trust extends this model by allowing full staking under a 95% trust-retention structure, where the delegated sponsor explicitly receives no portion of staking rewards. Data compiled by Woofun AI indicates that using Bitwise's disclosed contemporaneous gross staking reward rate of 6.28% as a benchmark, a fully staked SOL product retaining 95% of rewards would generate roughly 5.97% before the 14 bps fee. For ETH, assuming a hypothetical 3% gross staking yield with 50% to 80% of assets staked, the retained staking contribution lands between roughly 1.29% and 2.14% after fees. Advisors evaluating these instruments must compare fee-minus-staking economics, weighing gross yield, staked share, and the 95% retention rate to determine the effective cost of exposure.

Institutional rotation into ETH and SOL has occurred in fits and starts throughout 2026, characterized by episodic demand without a durable regime. Around May 25, US spot ETF data showed BTC ETFs losing roughly 16,595 BTC over seven days while SOL ETFs added 192,835 SOL, approximately $16.58 million, as ETH ETFs shed 105,862 ETH. Woofun AI notes that the pattern across those weeks reveals SOL picking up episodic demand while ETH lags behind Bitcoin's own outflow pace, with alt-specific bids landing on XRP and Hyperliquid. The ETH/SOL pair failed to attract a sustained bid as a unit during this period, highlighting the fragmented nature of current capital flows.

If a sustained rotation arrives, the 14 bps fee becomes a structural weapon against competitors running at 0.19% to 0.25%. These rivals face the choice of cutting fees or ceding market share to a brand with Morgan Stanley's distribution reach. A fully staked SOL product retaining 95% of rewards at 14 bps makes the economics against a 20 bps unstaked competitor difficult to justify on the numbers alone. In this environment, the allocation case for ETH and SOL as portfolio components faces a tighter cost-of-capital argument than it did in 2024, requiring low fees and staking yields to justify client inflows.

The SEC's effectiveness timeline adds a separate procedural layer of uncertainty, as staking treatment, custody arrangements, and tax handling could all require further amendments before either product trades. The prize Morgan Stanley is competing for is advisor shelf space in the allocation cycle that follows Bitcoin normalization. Woofun AI analysis suggests that by the time institutions broadly accept ETH and SOL as portfolio-eligible, Morgan Stanley crypto ETFs with low fees and staking pass-through could secure a structural first-mover advantage in the market.