Mizuho just delivered a sharp wake-up call to anyone who assumed Circle’s path to profitability was straightforward. The Japanese financial giant downgraded the stablecoin issuer from Neutral to Underperform and halved its price target from $85 to $50, according to the original report. The core issue is not regulation or demand for USDC—it’s a structural squeeze on margins baked into the OpenUSD model.
Circle’s OpenUSD framework incentivizes distribution partners by sharing a large portion of reserve income. Mizuho now sees that arrangement becoming more expensive. The bank’s analysts raised their forecast for Circle’s 2027 distribution and transaction expense ratio from 64% to 73%, and slashed the adjusted EBITDA estimate from $1.09 billion to $699 million. That’s a 36% cut to expected earnings, and it reframes the revenue-sharing playbook Circle has been building.
Revenue-Sharing Squeeze
The logic behind OpenUSD is straightforward: give issuers and distribution platforms a slice of the yield from underlying reserves to accelerate adoption. But Mizuho’s downgrade suggests the cost of that adoption is climbing faster than the benefits. If Circle must hand over 73 cents of every dollar in distribution and transaction costs by 2027, the remaining margin doesn’t leave much room for operational scale.
Circle itself has positioned USDC as a regulatory-compliant alternative to Tether, and the company has spent heavily on lobbying, licensing, and partnerships. But the bank’s math implies that even if USDC supply grows, the incremental profit may not materialize at the same rate. That’s a structural challenge, not a cyclical one.
The Stablecoin Margin Debate
The downgrade lands at a tense moment for traditional finance’s relationship with crypto. Major banks are both fighting crypto legislation and launching their own tokenization and stablecoin projects, as noted in reporting on banking opposition to a landmark US crypto bill. Institutions want a piece of the stablecoin market, but they also understand the margin dynamics better than most. Mizuho’s analysis essentially applies a traditional banking lens to Circle: if you’re giving away most of your net interest income, you’re a utility, not a growth stock.
The wild card is that stablecoin demand is still sharply rising, particularly as real-world assets cross milestones like $20 billion on-chain, as captured in a recent tokenization roundup. Circle would argue that total addressable volume more than compensates for per-unit margin compression. Mizuho’s model is effectively saying the opposite.
What the Downgrade Leaves Unanswered
Two large uncertainties hang over the report. First, Circle’s ability to renegotiate rev-share terms with large partners if USDC becomes too embedded to walk away. Second, whether a change in the interest-rate environment lifts reserve yields and eases the margin math. Neither is under Circle’s direct control.
The bank’s call also assumes a steady-state competitive landscape. Yet with institutional staking driving price action in assets like SUI—detailed in SUI’s recent 18% surge—it’s clear that deep-pocketed players are selectively pouring capital into crypto infrastructure. Circle may find itself facing well-funded partners who demand even larger cuts, or new entrants that replicate the OpenUSD model without the legacy cost base.
For now, Mizuho’s downgrade is a signal that the easy narrative around stablecoin profits is running into spreadsheets. The market will watch whether Circle’s next earnings or on-chain metrics validate the bank’s expense-ratio warning.
