Morpho has crossed $500 million in total deposits on Arc, Circle's EVM-compatible Layer-1 blockchain, just over two weeks after the network's public mainnet went live. Morpho, the decentralized lending protocol, was integrated as Arc's core credit layer from day one.

The numbers behind the milestone

Arc's public mainnet launched on September 16, 2026, and Morpho went live the same day, meaning lenders and borrowers could begin moving capital immediately. EVM compatibility means the network can run Ethereum-style smart contracts, which is what let an established EVM protocol like Morpho plug in from the first block rather than being rebuilt for Arc from scratch. Launch day alone drew between $150 million and $220 million in initial deposits, most of it landing in USDC and EURC markets—Circle's dollar- and euro-denominated stablecoins.

By October 2, 2026, total deposits on Morpho's Arc deployment had reached $500.27 million, while outstanding loans stood at $189.93 million on the same date.

Activity is far from evenly distributed. The cirBTC/USDC market accounted for approximately 86% of lending and borrowing on the platform. cirBTC is Circle's Bitcoin-backed wrapped token, and a cirBTC/USDC market allows users to post Bitcoin exposure as collateral and borrow dollars against it. That structure lets Bitcoin holders tap dollar liquidity without selling their BTC, the core draw of collateralized borrowing. The market has been running at near-full utilization—nearly all of the USDC that lenders have supplied has already been borrowed.

Institutional-driven deposits

Deposit growth has been driven heavily by institutional lending rather than individual users chasing yield, and the vault lineup reflects that. Morpho's curated vaults on Arc are managed by firms including Steakhouse Financial and Bitwise, which select which markets a vault lends into and how much risk it takes on. The vault model separates the lending machinery from the risk decisions, giving allocators a named curator accountable for where funds are deployed. Top vaults on Arc include ones from Galaxy and Keyrock, yielding about 0.80% net APY. The underlying engine is Morpho Blue, which supports variable-rate lending and borrowing.

Background: Circle builds its own rails

Arc represents Circle's effort to own more of the infrastructure stack that its stablecoins run on. The network emphasizes stablecoin payments, foreign exchange, and tokenized assets. Its validator set also includes backing from major institutions such as BlackRock and Visa.

Morpho is no stranger to scale. Its broader network held $16.54 billion in total deposits as of early October 2026. Measured against that figure, Arc's $500.27 million represents a small slice—roughly 3% of the total—meaning the milestone tracks a new chain's early traction rather than growth in Morpho's overall footprint.

What this means

With roughly 86% of activity tied to a single cirBTC/USDC market, Arc's lending story is currently, above all, a Bitcoin-collateral story.

Near-full utilization raises practical questions. When a lending market is almost entirely borrowed, lenders looking to exit may have to wait for borrowers to repay or for new deposits to arrive. Variable rates are the built-in mechanism for this: if borrowing pressure stays high, rates in the market should climb and attract more USDC supply. How smoothly that rebalancing plays out will be an early test for Arc's young credit markets.

The participation of curators such as Steakhouse Financial and Bitwise, alongside vaults from Galaxy and Keyrock, points to a user base that values structure and known counterparties over headline yield—a reading reinforced by the roughly 0.80% net APY on top vaults.

The next markers to watch are straightforward: whether deposits keep climbing past $500.27 million, whether loans grow beyond $189.93 million, and whether activity spreads out from the cirBTC/USDC market into EURC and other assets.