Morgan Stanley’s spot Bitcoin ETF recorded another $32.4 million in net inflows on September 23, extending a three-session accumulation streak even as Bitcoin retreated from its latest rally. MSBT attracted a combined $193.1 million between September 21 and September 23, according to finalized fund-flow data, bringing renewed attention to the bank’s growing presence in the U.S. spot Bitcoin ETF market.
The broader market was also positive. Farside Investors’ updated September 23 table shows U.S. spot Bitcoin ETFs taking in $346.9 million overall, led by BlackRock’s IBIT at $166.3 million and Fidelity’s FBTC at $143.2 million. ARKB added $5 million, while MSBT contributed $32.4 million. That means MSBT was a notable contributor but not the largest source of the day’s inflows, correcting preliminary readings that showed several competing funds at zero before their data had been reported.
Bitcoin ETF Daily Flow – US$
Morgan Stanley (MSBT): 32.4 million pic.twitter.com/ix2d7BL4xK
— Farside Investors (@FarsideUK) September 23, 2026
MSBT Extends Three-Day Inflow Streak
Morgan Stanley’s fund has nevertheless posted a concentrated run of its own. MSBT attracted $61.7 million on September 21, followed by a record $99 million on September 22 and another $32.4 million on September 23. Those three sessions reconcile to $193.1 million in net creations, making the latest stretch one of the strongest periods for the fund since its April debut.
Arkham Intelligence separately highlighted the pattern using on-chain addresses associated with the fund. Its September 24 update said MSBT had recorded no daily outflow during the previous 20 trading sessions and held roughly 9,218 BTC, valued near $776 million at the time of the observation. On-chain custody movements can help track fund activity, but ETF net flows are more directly measured through creation and redemption data rather than wallet transfers alone.
MSBT entered the market in April with approximately $30.6 million to $34 million in first-day inflows and a 0.14% expense ratio. ChainReport’s earlier coverage of MSBT’s launch and initial asset gathering noted that the low fee positioned the fund below several major rivals on cost. The current inflow streak provides a more meaningful test of whether that pricing and Morgan Stanley’s distribution reach can translate into sustained asset gathering.
The fund followed an earlier filing process in which Morgan Stanley moved from distributing third-party crypto products toward issuing a Bitcoin vehicle under its own name. That transition was detailed when Morgan Stanley amended its MSBT registration for NYSE Arca. The bank has since expanded its broader digital-asset strategy beyond ETFs, including direct crypto trading through E*Trade.
ETF Demand Continues Despite Bitcoin Pullback
The September 23 flows arrived as Bitcoin surrendered part of a sharp advance that had taken the asset above $87,000 earlier in the week. U.S. spot Bitcoin ETFs had already recorded $999 million of inflows on September 21 and $714.7 million on September 22. The September 23 total therefore extended the category’s positive streak while daily inflow momentum slowed substantially from the previous two sessions.
ChainReport previously tracked the $999 million September 21 Bitcoin ETF inflow, which was the strongest daily result of 2026 at the time. The five trading sessions through September 23 produced approximately $2.65 billion in cumulative net inflows based on Farside’s finalized data. That positive flow backdrop coincided with Bitcoin volatility, but the timing does not establish that ETF buying caused either the earlier rally or the subsequent pullback.
ETF flow data also does not identify whether subscriptions originated from institutions, retail investors, advisers or other client channels. MSBT inflows therefore demonstrate demand for shares of Morgan Stanley’s Bitcoin vehicle, not independently verified “institutional accumulation.” That distinction remains important when assessing whether the bank’s wealth-management network is becoming a material source of new Bitcoin ETF demand.
The next concrete milestone is whether MSBT extends its inflow streak beyond three consecutive sessions while maintaining the longer run without a net redemption day. A sustained pattern of weekly and monthly creations would provide stronger evidence of durable asset gathering than the $193.1 million three-day burst alone, particularly as the wider ETF market continues to alternate between concentrated inflow periods and rapid reversals.