Phong Le, President and CEO of Strategy, the world’s first and largest Bitcoin treasury firm, said Morgan Stanley’s proposed bitcoin ETF could unlock as much as $160 billion in demand under a modest portfolio allocation scenario.

“Morgan Stanley Wealth Management oversees about $8 trillion in AUM and recommends 0–4% bitcoin allocation,” Le wrote on X. “A 2% allocation would represent $160 billion, about three times the size of IBIT. MSBT: Monster Bitcoin.”

In other words, Le is saying that even a modest 2% bitcoin allocation across Morgan Stanley’s $8 trillion wealth platform could drive about $160 billion into bitcoin, far exceeding the size of existing ETFs like BlackRock’s iShares Bitcoin Trust.

The comment landed as Morgan Stanley advanced plans for its own spot BTC ETF, revealing new details in a filing with the U.S. Securities and Exchange Commission. The fund would trade under the ticker MSBT, a symbol that Le cast as shorthand for the potential scale of institutional demand.

Morgan Stanley’s amended S-1 outlines a structure familiar to the growing class of spot BTC ETFs. The trust is set to list on NYSE Arca with a 10,000-share creation unit and an initial seed basket of 50,000 shares, expected to raise about $1 million. The bank also disclosed it purchased two shares earlier this month for audit purposes.

Key service providers mirror those used across the ETF ecosystem. BNY Mellon will act as cash custodian, administrator, and transfer agent, while Coinbase is set to serve as prime broker and custodian for the fund’s bitcoin. 

The product would hold BTC directly, aligning with the structure that has defined the current wave of the U.S.-listed spot ETFs.

Capital managers are migrating to bitcoin 

Le’s framing points to a larger question that sits beyond the mechanics of the filing: how much capital wealth managers may allocate if BTC becomes a standard portfolio component. Morgan Stanley Wealth Management, with trillions in client assets, has signaled that bitcoin exposure can range from zero to four percent depending on client profile. 

Even a midpoint allocation, as Le noted, would imply flows that exceed the size of existing flagship products such as iShares Bitcoin Trust.

So far, adoption has moved in stages. Since spot BTC ETFs launched in 2024, the category has attracted more than $50 billion in inflows, driven in large part by self-directed investors. Within advisory channels, uptake remains uneven, shaped by internal policies, risk models, and client demand.

Morgan Stanley has already taken steps in that direction, allowing brokerage clients to access spot BTC ETFs and widening availability over time. The MSBT filing suggests a shift from distribution toward ownership of the product itself, a move that could deepen the bank’s role in the market if approval is granted.

The SEC has not provided a timeline for a decision, and approval is not assured. Still, the application marks a notable development: a major U.S. bank seeking to issue its own spot bitcoin ETF in a market it once approached with caution.