Morgan Stanley’s spot Bitcoin exchange-traded fund, the Morgan Stanley Bitcoin Trust (MSBT), had net assets of $635 million as of September 14, while cumulative net inflows reached $538 million, according to the latest disclosed fund data.

MSBT was listed on the New York Stock Exchange on April 8. The fund was described as the first spot Bitcoin exchange-traded product launched by a major U.S. bank-affiliated asset management firm, giving Morgan Stanley a direct product presence in the regulated Bitcoin ETF market.

Since its debut, the fund has seen only one day of net outflows, when $5.26 million left the product on May 29. Over the past 21 trading days, MSBT posted inflows on 12 trading days, with cumulative net inflows of about $71.95 million. On the most recent trading day, the fund added $9.75 million in Bitcoin exposure, marking its fifth straight day of net inflows.

Earlier milestones point to a relatively fast asset build. Morgan Stanley filed for the product in January and later set a 0.14% fee before launch. On its first trading day, MSBT recorded about $34 million in inflows, and by early June its historical cumulative net inflows had reached $268 million.

The latest figures show that growth has continued well beyond the launch period. That matters because early ETF demand can sometimes fade after initial positioning, while steadier inflow patterns tend to draw more attention from market participants tracking how traditional financial institutions are building crypto exposure through listed products.

Why It Matters

MSBT’s asset growth adds to the case that regulated Bitcoin investment products are becoming a more established part of traditional portfolio infrastructure. For Morgan Stanley, the fund’s expansion shows that a major bank-affiliated asset manager can move from offering access to third-party crypto products to building scale in its own branded vehicle.

It also keeps the focus on competition inside the U.S. spot Bitcoin ETF market. Inflows into a newer entrant backed by a large financial institution suggest brand, distribution and product structure can still shape market share, even after the broader ETF category has already matured.