Arkham Intelligence has publicly identified and labeled the on-chain custody wallets backing Morgan Stanley’s spot bitcoin ETF, MSBT, opening a new level of transparency for one of the most closely watched institutional bitcoin products in the U.S. market. With the labels now live on Arkham’s platform, market participants can monitor the fund’s bitcoin balances and transfers with near real-time visibility once on-chain settlement is completed.
Arkham Identifies Three Wallets Linked to MSBT Custody
According to the report, Arkham’s internal research team identified three blockchain wallet addresses connected to the custodial structure of MSBT. The addresses were linked to Coinbase and BNY Mellon, the custodians associated with the fund, and were grouped under a verified entity page on Arkham’s dashboard.
As of around April 18, 2026, the wallets identified by Arkham held a combined 1,348 BTC. Based on bitcoin trading in the range of roughly $75,700 to $76,000 at the time, those holdings were worth approximately $102.08 million. Arkham had previously said on X that MSBT had acquired about $83.6 million in bitcoin since launch and that around $64.4 million was visible in its on-chain addresses at that stage. Since then, the amount visible in the tagged wallets has increased further.
MSBT Launch Put Morgan Stanley at the Center of TradFi Crypto Attention
MSBT launched on April 8, 2026 on NYSE Arca, making Morgan Stanley the first major U.S. bank to issue a spot bitcoin ETF. Given that the bank oversees approximately $9.3 trillion in client assets, the product immediately drew attention from traditional finance observers as well as crypto-native investors looking for signs of institutional adoption.
The ETF also stood out on cost. MSBT debuted with an expense ratio of 0.14%, the lowest among major U.S. spot bitcoin ETFs cited in the report. By comparison, Blackrock’s Ishares Bitcoin Trust (IBIT) charges 0.25%. This pricing strategy may help explain why the product quickly became a subject of interest in both the ETF market and the broader bitcoin ecosystem.
Trading activity at launch was also notable. On its first day, MSBT recorded roughly $34 million in trading volume. Bloomberg ETF analyst Eric Balchunas reportedly said the debut ranked within the top 1% of ETF launches over the previous year. After about five trading days, the fund had reached around $87 million in net assets.
On-Chain Transfers Show Continued Accumulation
Arkham’s dashboard documented multiple inbound transfers during MSBT’s first two weeks, with deposits ranging from roughly 80 BTC to 415 BTC. Among the more recent examples, one transfer of 177.757 BTC, worth about $13.75 million, arrived roughly 23 hours before publication. Another deposit of 209.296 BTC, valued at around $15.47 million, was recorded three days earlier.
At the time of reporting, no significant outflows had been observed from the tagged wallets. That pattern suggested ongoing accumulation rather than redemption pressure, although on-chain data for ETF structures should be interpreted within the context of settlement mechanics and custody operations.
T+1 Settlement Means “Near Real-Time,” Not Instant Disclosure
One important detail is that spot bitcoin ETFs generally operate on a T+1 settlement cycle. That means on-chain transfers typically appear about a day after public creation or redemption activity is initiated. In practical terms, Arkham’s dashboard does not reveal activity instantly at the moment an ETF order is announced, but it does provide a close-to-live view once the bitcoin has actually moved on-chain and the transaction is finalized.
This distinction matters for analysts, traders, and institutional observers. The dashboard can serve as a strong signal for fund accumulation trends, wallet movements, and custody flows, but users still need to account for the short lag between fund operations and blockchain settlement.
Visibility Improves, but Tagged Wallets May Not Be Complete
Arkham said the three publicly labeled addresses carry partial prefixes bc1qa…, bc1qe…, and bc1qn…. These wallets are displayed on a single entity page showing aggregate balances, inflow and outflow charts, and a full transaction history.
Still, the currently visible addresses may not represent the entirety of Morgan Stanley’s bitcoin holdings for the ETF. Morgan Stanley’s own website indicated that the fund held 1,820.60 BTC as of April 17, 2026, a figure notably higher than the 1,348 BTC visible in the tagged wallets highlighted by Arkham. That gap suggests either additional addresses remain unidentified or some assets are held in custody structures not yet fully mapped by Arkham.
A Broader Shift Toward Transparent Institutional Bitcoin Monitoring
Arkham published a detailed research note on April 17, 2026 explaining the methodology behind the identification. The company said its analytics platform now spans more than 450,000 entity pages and billions of address labels across exchanges, governments, asset managers, DeFi protocols, and individual wallets.
The MSBT labeling places Morgan Stanley alongside other prominent entities whose wallets are already being monitored on-chain. Arkham also tracks Coinbase custody wallets, Grayscale-related holdings, and addresses associated with Blackrock’s IBIT. In another example of how broad such labeling has become, Arkham’s page for the U.S. government shows more than 328,000 BTC in seized assets, although those figures may change over time as new addresses are identified and market prices fluctuate.
For the market, the significance of the MSBT dashboard is not just the number of coins in a few visible wallets. The real development is that a Wall Street institution’s bitcoin accumulation can now be observed in a way that previously would have required waiting for regulatory filings or periodic disclosures. Retail investors, professional traders, and institutions can all watch the same wallet activity from a single interface.
That development reinforces a distinctive feature of bitcoin-based financial products: even when wrapped in conventional investment vehicles such as ETFs, the underlying asset can still provide a degree of transparency unavailable in many traditional markets. As more ETF issuers and custodians become identifiable on-chain, this kind of monitoring may become a standard part of institutional crypto analysis.