Coinbase and USDC: The Great Stablecoin Awakening Myth

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In the solemn corridor of finance, where risk is usually a flaky soufflé that somehow deflates unless you stare at it long enough, William Blair whispers that Coinbase’s 26% stumble from its Q1 peak has largely de‑risked the stock. It’s the kind of optimism you’d expect from a fortune teller who’s run out of candles but still insists the future glows-weak trading is now priced in while surging USDC adoption turns the exchange into a higher‑margin, cycle‑resistant unicorn trying not to sneeze at fiat.

Coinbase’s Q3 2025 shareholder letter flagged subscription and services revenue – including stablecoin income – in a $710-$790 million quarterly range, while external estimates suggest trading fees now account for less than half of total revenue.

USDC’s 27% share and the Coinbase-Circle flywheel

Where William Blair is most emphatic is on stablecoins. The note calls the continued growth of USD Coin “a core positive,” estimating that USDC’s share of the dollar stablecoin market has risen to roughly 27%, up from around 21% in 2024, as it steadily gains ground on Tether’s USDT. KuCoin and CEX.IO data show USDC supply has jumped about 220% since late 2023 to roughly $78-$81 billion, helping push total stablecoin capitalization to a record $315 billion in Q1 2026, with stablecoins now representing around 75% of all crypto trading volume.

That growth directly feeds Coinbase’s bottom line. Bloomberg Intelligence estimates the exchange generated about $1.35 billion in USDC‑related revenue in 2025 – roughly 19% of total income – through its share of reserve interest and fees, with analysts at FinanceFeeds and CCN projecting that figure could grow two‑ to seven‑fold if USDC‑based payments and B2B settlement rails continue to scale. Coinbase also holds a significant minority stake in USDC issuer Circle and splits global reserve income 50/50, a structure William Blair says creates “powerful economic alignment” as the stablecoin expands into merchant, payroll and card‑network integrations.

William Blair’s January note described Circle as “positioned to ride a wave of USDC commercialization,” highlighting Visa’s decision to formally settle some U.S. card flows in USDC, as well as new integrations with Intuit and other enterprise software providers. The latest update reiterates that view, arguing that as USDC becomes embedded in payment flows, on‑chain treasuries and tokenized real‑world assets, Coinbase’s USDC revenue stream should become “more recurring, higher‑margin and less cyclical than trading fees,” even under tougher U.S. stablecoin rules.

On the macro side, the bank assigns a low probability to a prolonged “crypto winter” and frames Coinbase’s setup as an “asymmetric upside” bet: if markets stay muted, stablecoin and subscription revenues still support the business, while any renewed bull phase in bitcoin and ether volumes would come on top of an already improving earnings base. In that sense, USDC’s rise from a roughly one‑fifth to more than a quarter share of the stablecoin market is not just a technical detail in on‑chain plumbing; for Coinbase and Circle, William Blair argues, it is the spine of a long‑term equity story.

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2026-04-13 20:00