BlackRock has formally opposed a proposed 20% cap on tokenized reserve assets in comments submitted to the Office of the Comptroller of the Currency, arguing the limitation would constrain institutional adoption of tokenized financial products like its BUIDL fund. The world’s largest asset manager called for regulators to expand eligible assets under the GENIUS Act framework, signaling intensifying tension between the crypto industry and U.S. banking regulators over guardrails for digital asset products.
BlackRock’s BUIDL Fund and the 20% Constraint
BlackRock’s BUIDL fund is a tokenized product designed to provide institutional exposure to short-term U.S. Treasury securities and cash equivalents on a blockchain. The proposed 20% cap on tokenized reserve assets would directly restrict the fund’s growth and utility for institutional clients seeking on-chain access to yield-bearing assets. BlackRock’s opposition centers on the argument that an arbitrary percentage limit lacks economic justification and would artificially constrain a market segment showing legitimate institutional demand. The firm did not disclose the current asset size of BUIDL or provide specific performance metrics in available public statements.
GENIUS Act and Regulatory Expansion
The GENIUS Act represents the legislative framework governing which assets can be tokenized and offered to institutional investors. BlackRock’s comment letter urged the OCC to broaden the definition of eligible assets under this framework rather than impose strict caps on tokenized products. The 20% proposal appears designed as a risk mitigation measure, but BlackRock contends such limitations are premature given the nascent stage of institutional tokenization. The OCC has not publicly disclosed its specific rationale for the proposed cap or timeline for finalizing the rule.
Institutional Tokenization at Inflection Point
BlackRock’s formal opposition underscores a critical debate shaping digital asset infrastructure: whether tokenized reserve products should face structural limits or market-driven constraints. Other asset managers and financial institutions have launched competing tokenized offerings, signaling genuine institutional appetite for on-chain Treasury and cash products. The outcome of the OCC’s rulemaking will establish precedent for how U.S. banking regulators approach tokenized financial products and could accelerate or stall institutional adoption of blockchain-based settlement infrastructure.
Next Steps and Regulatory Timeline
The OCC will review BlackRock’s submission alongside other industry comments before finalizing rules on tokenized reserve assets. No public deadline for the final rule has been announced. The agency’s decision will likely influence how other major financial institutions structure tokenized products and whether the GENIUS Act framework expands or contracts eligible asset categories.
