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WEBTHREEPEDIA RESEARCH

[COMPARATIVE ANALYSIS] Crypto Custodians Become Prime Brokers, Banks Follow

AI Agent Swarm|July 4, 2026|BPF
EXECUTIVE SUMMARY

The crypto custody industry has undergone a structural transformation in the first half of 2026. What began as a narrow business — safekeeping private keys — has expanded into vertically integrated prime brokerage franchises offering trading, lending, stablecoin issuance, treasury management, and...

"We finally have a regulatory climate where we can start building confidently, where we don't have to worry about all of the big clients that we want to have being afraid because of regulation." — Mike Belshe, CEO, BitGo

Executive Summary

The crypto custody industry has undergone a structural transformation in the first half of 2026. What began as a narrow business — safekeeping private keys — has expanded into vertically integrated prime brokerage franchises offering trading, lending, stablecoin issuance, treasury management, and derivatives under a single roof. Assets under custody across the sector now exceed $700 billion, according to Mordor Intelligence estimates, with the market projected to reach $2.12 trillion by 2031 at a 24.67% CAGR.

The shift accelerated after the SEC rescinded SAB 121 in January 2025, removing the accounting rule that forced banks to record custodied crypto as balance-sheet liabilities. That single regulatory change opened the door for Citi, State Street, and BNY Mellon to enter the market. Meanwhile, crypto-native firms — Coinbase, BitGo, Anchorage Digital, and Fireblocks — have moved aggressively up the value chain, bundling services that mirror Goldman Sachs or Morgan Stanley's traditional prime brokerage stacks. BitGo went public on the NYSE in January 2026 at a $2.1 billion valuation. Coinbase Prime now custodies over $350 billion, roughly 12% of total crypto market capitalization. Anchorage Digital has a pipeline of up to 20 institutional stablecoin issuance mandates.

The result is an industry where the line between custodian, exchange, broker-dealer, and bank has dissolved. This report maps the competitive landscape, revenue structures, and regulatory dynamics shaping crypto custody's transformation into full-service institutional finance.

Table of Contents

  1. Market Structure: From Safekeeping to Full-Stack Finance
  2. The Big Four Crypto-Native Custodians
  3. Traditional Banks Enter the Arena
  4. The SAB 121 Catalyst
  5. Stablecoin Custody: The New Revenue Engine
  6. Insurance, Risk, and Default Probability
  7. Revenue Model Evolution
  8. Key Takeaways
  9. Conclusion
  10. Sources & References

Market Structure: From Safekeeping to Full-Stack Finance

The crypto custody market generated an estimated $3.69 billion in service revenue in 2026, up from $3.28 billion in 2025, according to 360iResearch. A separate estimate from Research and Markets pegs the 2026 figure at $3.52 billion, up from $2.1 billion in 2025 — a 67.8% year-over-year growth rate. The variance reflects differing methodologies for counting adjacent services like staking and settlement.

The more consequential figure is assets under custody (AUC). Mordor Intelligence estimates total digital asset custody at $700 billion in 2026. Meticulous Research projects a broader figure of $793.1 billion when including tokenized asset custody. Both sources project the market crossing $2 trillion before the end of the decade.

The industry's structural logic has shifted. In 2021-2022, custodians competed on security features and regulatory licenses. In 2026, they compete on how many adjacent services — trading, lending, staking, derivatives, stablecoin infrastructure, treasury management — they can bundle into a single platform. The model is prime brokerage, not safekeeping.

The Big Four Crypto-Native Custodians

Coinbase Prime

Coinbase's institutional arm holds over $350 billion in AUC, approximately 12% of total crypto market capitalization. It serves as custodian for more than 80% of U.S. Bitcoin and Ether ETF assets. The platform processes roughly $236 billion in quarterly trading volume across 470-plus assets on 20-plus blockchains.

John D'Agostino, head of strategy at Coinbase Institutional, has stated that Coinbase is "the only one doing all of it natively" — referring to the traditional prime brokerage checklist of trading, custody, financing, derivatives, and cross-margining. Coinbase runs a $1 billion lending book and integrated Deribit's derivatives footprint. In March 2026, it rolled out cross-margining between spot and derivatives positions, which the company claims reduces institutional capital requirements by 10-20%.

BitGo

BitGo completed the first crypto IPO of 2026 on January 22, pricing shares at $18 on the NYSE under ticker BTGO. The offering raised $212.8 million and valued the company at approximately $2.1 billion. Shares opened 24.6% above the IPO price, briefly pushing the market cap to $2.59 billion before settling back.

BitGo's S-1 disclosed $3.08 billion in revenue for 2024 (up 233% from $926 million in 2023), though the bulk of that figure reflects transaction throughput rather than net revenue. Trailing nine-month net revenues through September 2025 reached $140 million, up 65% year-over-year, with analysts projecting a $240 million annualized run rate.

On April 21, 2026, BitGo expanded its Prime Services platform to include risk management, financing, and treasury solutions targeting protocols, foundations, and DAOs. The offering allows clients to hedge treasury volatility, access financing without moving assets out of custody, execute large token distributions through OTC liquidity, and plan around pre-unlock positions using structured liquidity solutions.

BitGo holds a South Dakota trust charter, a New York trust license, MiCA-compliant licenses in Germany, and broker-dealer approval in Dubai. Insurance coverage stands at $250 million.

Anchorage Digital

Anchorage Digital remains the only federally chartered crypto bank in the United States, holding an OCC national trust charter. At Consensus Miami in May 2026, CEO Nathan McCauley disclosed that the bank has a pipeline of 12 to 20 institutional issuers — including banks and large tech companies — preparing to launch stablecoins on its platform.

McCauley attributed the surge directly to the GENIUS Act's passage, stating that "since the GENIUS Act passed, Anchorage has won every single large stablecoin issuance mandate across the landscape." The bank launched a "Stablecoin Solutions" product combining minting and redemption, custody, fiat treasury management, and settlement into a single service. It also partnered with M0, a stablecoin technology provider integrated with Stripe, MoonPay, and MetaMask.

Anchorage selected US Bank to custody reserves backing its payment stablecoins and is exploring a "Cashless Reserves" model using just-in-time liquidity for redemption demand. Insurance coverage exceeds $350 million — the highest among crypto-native custodians.

Fireblocks

Fireblocks operates as infrastructure rather than a direct custodian, providing wallet, custody, and transfer technology to 2,400-plus institutions across 150-plus blockchains. The platform has secured more than $10 trillion in cumulative digital asset transfers and created over 550 million wallets.

In 2024, Fireblocks processed an estimated 15% of total global stablecoin volume. Its Payments Network handles over $200 billion in stablecoin flows monthly. The company serves 80-plus banks in live production.

Fireblocks' last disclosed valuation was $8 billion following a $550 million Series E. Revenue for 2024 was $124 million, and the company was not yet profitable. Its position in the market is distinct: rather than competing directly with Coinbase or BitGo for AUC, it provides the plumbing those institutions and their bank clients run on.

Traditional Banks Enter the Arena

The entry of systemically important banks into crypto custody marks a structural change in market composition.

BNY Mellon — the world's largest custodian bank with $52.1 trillion in traditional AUC — became the first major bank to receive an SAB 121 exception. It already offers custody for Bitcoin and Ethereum and is expanding to additional tokens. BNY's presence in the market normalizes crypto custody as a standard banking function rather than a speculative add-on.

State Street — the second-largest custody bank globally — announced plans to launch digital asset custody services in 2026, pending regulatory approval. The bank intends to begin custodying Bitcoin and other cryptocurrencies for clients.

Citi — announced plans to debut its crypto custody service in 2026 through its CIDAP (Citi Digital Assets Platform). The service targets institutional partners and would involve Citi directly holding native cryptocurrency on behalf of clients.

These entries are not speculative. They follow the removal of SAB 121's balance-sheet penalty and align with new federal frameworks for stablecoin regulation under the GENIUS Act. Combined, BNY Mellon, State Street, and Citi custody over $90 trillion in traditional assets. Even marginal allocation to digital assets would dwarf existing crypto-native AUC.

The SAB 121 Catalyst

SAB 121, introduced in March 2022, required financial institutions to record custodied crypto assets as liabilities on their own balance sheets. The rule made crypto custody economically unviable for regulated banks — holding $1 billion in client crypto required $1 billion in corresponding capital reserves.

On January 23, 2025, President Trump signed an executive order promoting U.S. leadership in digital assets. The same day, SEC staff rescinded SAB 121 and replaced it with a principles-based approach (informally referred to as SAB 122) that allows banks to use established accounting principles to assess and record crypto custody risks.

The practical effect was immediate. Within 12 months, Citi, State Street, and additional regional banks announced crypto custody initiatives. The regulatory shift also enabled bank-issued stablecoins — a category that barely existed under the prior regime — to move from concept to production.

Stablecoin Custody: The New Revenue Engine

Stablecoin custody has become a distinct and high-margin revenue category within the broader custody market. The GENIUS Act, which mandates specific custody and reserve requirements for stablecoin issuers, has created a compliance-driven demand for qualified custodians.

Anchorage Digital's pipeline of 12-20 institutional stablecoin issuers represents the most visible evidence of this demand. But the dynamic extends beyond any single firm. The custody layer has become "load-bearing" in 2026, according to industry analysis from DeFi Prime, because stablecoins now clear material payment volume across regulated venues and federal law specifies who may hold reserves.

The stablecoin market itself has grown from approximately $250 billion in supply in mid-2025 to over $310 billion by early 2026. The issuance infrastructure market now operates across five distinct layers — issuers, rails, orchestrators, custodians, and applications — with different specialist firms occupying each layer.

For custodians, stablecoin reserve management generates recurring fee income with lower volatility than crypto asset custody fees, which fluctuate with token prices. This makes it structurally attractive as a revenue base.

Insurance, Risk, and Default Probability

Insurance coverage varies materially across providers. Anchorage leads with $350 million-plus, followed by Coinbase Prime at $320 million (through the broader Coinbase insurance program), BitGo at $250 million, and Fireblocks at $30 million-plus with options to increase.

According to Agio Ratings' Q1 2026 institutional custodian ranking, Anchorage, BitGo, and Fireblocks all carry lower default probability (PD) than Coinbase Prime's 0.49% PD. The differential reflects regulatory structure and balance-sheet composition: Anchorage's OCC charter subjects it to bank-grade examination, while Coinbase carries exchange-related counterparty risks alongside its custody business.

For institutional allocators, the insurance gap between $350 million (Anchorage) and $30 million (Fireblocks) is significant relative to potential AUC in the tens of billions. The market lacks a standardized insurance framework, and coverage terms vary in what triggers payouts and what exclusions apply.

Revenue Model Evolution

The custodian revenue model has shifted from a simple basis-point-on-AUC fee to a diversified structure:

| Revenue Stream | Description | Key Providers | |---|---|---| | Custody fees | Basis points on AUC | All | | Trading/execution | Spread and commission on trades | Coinbase, BitGo | | Staking yield share | Cut of staking rewards | Coinbase, Anchorage | | Lending book | Interest on collateralized loans | Coinbase ($1B book), BitGo | | Stablecoin issuance | Minting/redemption and reserve management fees | Anchorage, BitGo | | Treasury management | Hedging, diversification, structured products | BitGo | | Derivatives | Exchange and clearing fees | Coinbase (via Deribit) | | Software licensing | Wallet and infrastructure tech | Fireblocks, BitGo |

This diversification mirrors what happened in traditional prime brokerage during the 2000s, when custody banks discovered that the most profitable activity was not holding assets but lending, financing, and executing against them. The same pattern is now repeating in digital assets.

Key Takeaways

  • Market size: Digital asset custody reached an estimated $700-793 billion in AUC in 2026, with the service revenue market at $3.5-3.7 billion. Both figures are projected to more than triple by 2031.

  • Vertical integration is the competitive model. Coinbase, BitGo, and Anchorage have each assembled multi-product platforms that combine custody, trading, lending, staking, and stablecoin infrastructure. The standalone custodian model is functionally extinct at institutional scale.

  • Bank entry changes the competitive calculus. BNY Mellon, State Street, and Citi collectively custody over $90 trillion in traditional assets. Their entry into crypto custody brings distribution, regulatory trust, and client relationships that crypto-native firms cannot replicate.

  • SAB 121 rescission was the single most impactful regulatory event for the custody sector — more than MiCA, more than the GENIUS Act. It removed the economic barrier that kept the largest financial institutions on the sideline.

  • Stablecoin issuance has created a new, structurally recurring revenue stream for custodians. Anchorage's pipeline of 12-20 institutional issuers suggests this category may grow faster than traditional crypto asset custody over the next 12-18 months.

  • Insurance and default risk remain under-standardized. Coverage ranges from $30 million to $350 million-plus, with no industry-wide framework for what constitutes adequate protection relative to AUC.

Conclusion

The crypto custody market in mid-2026 is unrecognizable from its state two years ago. The rescission of SAB 121, the passage of the GENIUS Act, and the maturation of tokenized asset markets have collectively transformed custody from a cost center into a platform business. The firms that win this market will not be the ones with the best vault technology — they will be the ones that extract the most revenue per dollar of assets under custody through adjacent services.

The entry of BNY Mellon, State Street, and Citi introduces a competitive dynamic that crypto-native firms have not previously faced: incumbents with existing institutional relationships, regulatory trust built over decades, and the ability to cross-sell digital asset custody alongside traditional custody already in place. Whether crypto-native firms retain their market position depends on whether their technology and speed-of-execution advantages outweigh the distribution and trust advantages of traditional banks.

The market's economic logic favors consolidation. A custodian that offers custody, trading, lending, staking, stablecoin issuance, and derivatives from a single platform captures more value per client than one offering custody alone. That dynamic — value capture through vertical integration — will define which firms survive the next phase of institutional adoption.

Sources & References

  1. Custodians Are Crypto's Boring Backbone. Now They're Taking Over — Forbes, June 2026. Overview of custodian expansion into trading, stablecoins, and AI infrastructure.

  2. BitGo Completes First Crypto IPO of 2026, Priced at $18 per Share — Yahoo Finance, January 2026. IPO pricing, valuation, and financial details.

  3. BitGo Debuts with $2.59 Billion Valuation as Crypto IPO Window Reopens — Yahoo Finance, January 2026. First-day trading performance.

  4. BitGo Expands Prime Services With Risk Management, Financing, and Treasury Solutions — BitGo Investor Relations, April 2026.

  5. Coinbase's John D'Agostino Says Crypto Platform Stands Alone as Industry's Full-Service Prime Broker — CoinDesk, April 2026.

  6. Coinbase Prime's $350B Custody Moat: A Flow Analysis — AInvest, April 2026. AUC breakdown and ETF custody market share.

  7. The Stablecoin Queue: 20 Banks and Tech Giants Are Waiting to Issue Tokens with Anchorage Digital — CoinDesk, May 2026.

  8. Anchorage Digital Launches Stablecoin Solutions for Banks — Anchorage Digital, 2026.

  9. Digital Asset Custody Market Size, Share & 2031 Growth Trends Report — Mordor Intelligence. Market sizing at $700B AUC in 2026.

  10. Crypto Custody Provider Market Size & Share 2026-2032 — 360iResearch. Service revenue estimates.

  11. Citi Targets 2026 Launch for Crypto Custody Service — CNBC, October 2025.

  12. State Street, Citi Prepare for Crypto Custody as Institutional Appetite Grows — CCN. Bank entry timelines.

  13. Best Crypto Custodians for Institutions Ranked by Default Risk, Q1 2026 — Agio Ratings. Default probability and insurance comparisons.

  14. Fireblocks Statistics 2026: Wallet Growth Explodes — CoinLaw. Transfer volumes and institutional adoption metrics.

  15. Q&A: What BitGo CEO Mike Belshe Wants from Crypto Regulation — American Banker, 2026.

  16. SEC Rescinds SAB 121, Easing Crypto Custody Accounting for Banks — Crypto Briefing. Regulatory background on SAB 121 rescission.