0.14% management fee. 100% staking rewards passed through. That is the headline. MSSE for Ethereum. MSOL for Solana. Cheapest on the market. But the data reveals something the press releases omit.
The real yield for a holder of MSSE? Not the raw 4% ETH staking APR. After the staking service fee (up to 5% per the prospectus, likely averaging 2% for institutional clients like Figment), and the 0.14% management fee, the net APR sits around 3.66% for ETH. For SOL, the raw yield is higher (~7%), but the 5% fee cap plus 0.14% leaves about 6.4% net. The haircut is 12.5% for ETH, 8.6% for SOL. Not trivial.
Context
Morgan Stanley's ETP series began in 2023 with the Bitcoin ETF (MSBT), which now manages over $140 million. The launch of MSSE and MSOL on July 28, 2025 extends the model to ETH and SOL with a twist: staking. The structure is a grantor trust. The sponsor (MSIM) holds the underlying coins via a qualified custodian (Coinbase Custody, for example) that also meets the Safe Harbor requirements of IRS Revenue Procedure 2025-31. Staking is outsourced to three providers: Figment, Galaxy, and Coinbase Canada. The trust can stake between 50-80% of ETH holdings and up to 100% of SOL holdings. The rewards are distributed as qualified dividend income under the Safe Harbor rule, simplifying taxes for US holders.
This is not a technological breakthrough. It is a compliance wrapper—a careful encapsulation of on-chain staking into a 1940 Act-exempt trust structure. The innovation is legal, not cryptographic. And that is where the data detective work begins.
Core: The On-Chain Evidence Chain
Let me trace the yield. An investor buys MSSE at NAV. The trust uses those dollars to acquire ETH on the open market—likely via a mix of OTC and exchange trades transparent in the holdings reports. The ETH is then delegated to Figment’s staking pool. Figment operates validators on the Ethereum Beacon Chain. The yield comes from consensus layer rewards (inflation + transaction fees). Figment takes a cut—the fee is not published per investor, but ranges from 0% to 5% of rewards. The remaining reward is swept into the trust’s wallet. The trust then calculates its net asset value daily using the CoinDesk ETH Reference Rate (4 PM NY). The staking income is distributed to shareholders periodically.
The first insight: the staking service fee is opaque. Retail investors cannot verify the exact split. Contrast this with Lido, where the fee is hardcoded at 10% in the smart contract. Code is transparent. A legal contract is not. I trust the code, not the community—but here the code governs the staking, while the fee is governed by a private agreement.
Based on my experience parsing DeFi yield structures during the 2020 summer, I built scripts to calculate real returns after fees. Applying the same logic here: if Figment charges 2% (industry norm for institutional), the net yield for MSSE is ~3.66%. For MSOL, with ~7% raw SOL yield minus 2% staking fee minus 0.14% = 4.86% net. That is lower than direct staking on Solana via Jito or Marinade (which net ~6% after protocol fees). The trade-off? No wallet management. No tax reporting complexity. No slashing risk borne directly by the investor. The trust absorbs slashing—up to a point.
But here is the hidden factor: the staking percentage is not fixed. The prospectus allows 50-80% for ETH and up to 100% for SOL. The sponsor decides. If they choose the lower end, the yield drops. In a bull market, they may stake higher to attract inflows. In a bear market, they may reduce exposure to avoid forced de-staking during redemptions. That discretion is a risk. Silence is the most expensive asset in a bubble—and right now, the market is silent on this variable.
Another data point: the management fee of 0.14% undercuts Grayscale’s 0.15% for MINI ETH and Franklin’s 0.19% for SOEZ. But Grayscale and Franklin do not offer staking within the ETF. So the comparison is apples to oranges. Morgan Stanley’s effective all-in cost (management + staking fee) could be 2.14% vs. 0.15% for Grayscale. That is 14x higher cost. The draw is the staking income. But if ETH staking yields fall to 2% (possible after the Shanghai upgrade fully settles), the net yield becomes negative after fees. Yield is often the interest paid on risk you didn’t see.
Contrarian: Low Fee ≠ Best Return
The narrative is that Morgan Stanley’s 0.14% fee is the cheapest. That is true—for the management fee. But the total cost to the investor includes the staking service fee, which is not disclosed per ETF. The 5% cap is an upper bound, but the actual fee could be zero for high-volume delegations. However, the investor cannot verify. The asymmetry benefits the sponsor, not the holder.
Furthermore, the Safe Harbor rule is temporary. IRS Revenue Procedure 2025-31 is a safe harbor, not a permanent statute. If the IRS changes the rules or Congress steps in, the staking income could revert to being taxed as ordinary income (up to 37% federal rate) rather than as qualified dividends (20% max). That would drastically reduce after-tax returns. The product’s entire value proposition relies on this rule.
And the SOL regulatory risk is live. The SEC currently lists SOL as a security in multiple lawsuits (Kraken, Coinbase). If the SEC wins, the MSOL trust may be forced to liquidate or convert to a non-staking format. The probability is medium per my own on-chain analysis of SEC enforcement actions. In 2021, I analyzed wash trading in an NFT project—60% of volume was from three wallets. The data was ignored. Here, the data on SEC cases is public. The risk is real.
Takeaway
Over the next week, watch the first-day trading volume of MSSE and MSOL. If it exceeds $50 million combined, it signals institutional demand beyond existing allocations. If it stagnates below $20 million, the product may be a flop. The real signal is not the fee—it is whether investors value the tax simplicity more than the yield drag. The data will answer. But remember: the cheapest entry fee does not guarantee the highest net return. Check the fine print. I trust the code, not the community—but here, the code is in a legal filing.