Coinbase’s Layer 2 network Base has experienced a net capital flight of $4.3 billion through cross-chain bridges in 2025—marking a significant reversal from its prior strong performance. This outflow reflects a steep decline in assets moving into the network—highlighting a broader shift in liquidity dynamics across the crypto landscape.

Ethereum Regains Dominance with $8.5 Billion Inflows

By contrast, Ethereum’s mainnet has attracted net inflows totaling $8.5 billion so far this year, reclaiming its position as the leading destination for on-chain institutional and retail capital. This uptick reinforces Ethereum’s central role in decentralized finance (DeFi), tokenization, and cross-chain infrastructure.

👀 What’s Driving These Divergent Flows?

1. Base’s Outflows: A Sudden Liquidity Shift

• In early June, asset balances on Base started collapsing—total ETH deposits dropped from approximately 1.82 million to just 831,980 ETH in one month.

• Stablecoin deposits have similarly stagnated, hovering around $4 billion, with degrading trading volumes across decentralized exchanges on the network.

2. Ethereum’s Rebound: A Seat of Confidence

• Ethereum has absorbed significant capital via bridges and inflows tied to spot ETH ETFs, which attracted $1.17 billion last June alone, according to Bitwise CIO Matt Hougan.

• In total, spot ETH ETFs have garnered $4.27 billion year-to-date, with approximately 4.11 million ETH now locked in these funds.

⏱️ Context: The Broader L2 Ecosystem

• Other Layer 2 networks have also experienced significant ETH outflows, indicating a systemic pull toward major chains like Ethereum.

• In contrast, some L2 networks (e.g., Arbitrum) saw moderate inflows (~$656 million weekly), suggesting that capital rotation among L2s is dynamic.

💡 Implications for the Crypto Landscape

Developer Activity & Ecosystem Health

• Declining funds and user engagement on Base may deter new dApp initiatives. Network effects—central to DeFi success—are at risk on shrinking platforms.

Investor Strategy

• Reallocations suggest heightened confidence in Ethereum’s mainnet assets, potentially reinforcing its network value.

• Meanwhile, spot ETH ETF inflows could attract more institutional investors, particularly in H2 2025.

Layer‑2 Competitive Landscape

• The data highlight a renaissance for Ethereum, even as L2 networks continue to compete for capital through tokenized yields, faster transactions, and novel use-cases.

🗓️ Key Metrics at a Glance

🔭 What to Watch in the Coming Months

• Bridge activity: Will Base’s exodus extend, or will strategic incentives lure funds back?

• Stablecoin & ETH balances on L2s: These serve as proxies for on-chain adoption and user retention.

• Spot ETH ETF trends: Continued strong inflows would further solidify Ethereum’s institutional standing.

The crypto ecosystem is in flux: Base, once ascending, faces a sharp reversal, while Ethereum surges with renewed capital confidence. These flow patterns reflect:

• A consolidation of capital into Ethereum’s mainnet.

• A recalibration in Layer 2 adoption and liquidity strategies.

• Less fragmented but more concentrated network usage dynamics.