Ethereum’s grip on decentralized exchange volume has loosened sharply, with a new SwapSpace report putting its share of cross-chain DEX activity at 19.3%, down from 46.2% a year earlier. Solana and BNB Chain absorbed most of the difference, and crypto-backed borrowing grew 74% over the same period.
The numbers land at a delicate moment for Ethereum. Ether traded near $2,440 on Thursday, down about 1.1% on the day, and the broader market has been selling risk ahead of the Federal Reserve’s September 15-16 meeting. Roughly 95 of the 100 largest crypto assets fell in the latest session. But the DEX data covers a full year of trading, not one bad week, and the trend line points one way: activity is spreading across chains faster than Ethereum is adding it back.
What moved and where
SwapSpace aggregates swap routes across dozens of chains and exchanges, which makes its volume split a reasonable proxy for where retail actually trades. The fall from 46.2% to 19.3% does not mean Ethereum DEX volume shrank in absolute terms. Uniswap and other Ethereum venues still process billions daily. It means everything else grew much faster.
Solana’s rise is the clearest story. The chain processed 5.2 billion non-vote transactions in August, an all-time high and up 19% from July’s record, according to figures the Solana team posted on X. Much of that volume comes from memecoin trading and the DEX venues that serve it, where fees are fractions of a cent and confirmation times run under a second. BNB Chain has pulled a similar trade, leaning on low fees and a large existing user base.
Table: DEX market share shift, per SwapSpace 2026 report
| Chain | Share, prior year | Share, current |
|---|---|---|
| Ethereum | 46.2% | 19.3% |
| Solana | minor | major gainer |
| BNB Chain | minor | major gainer |
SwapSpace did not publish a full per-chain breakdown in the summary circulating Thursday, so the exact Solana and BNB figures remain unstated. The directional claim, that Ethereum lost more than half its relative share in a year, is the report’s core finding.
The timing is awkward for Ethereum’s institutional narrative too. While spot ether ETFs have posted long stretches of inflows this year, including an 11-session run that pulled in roughly $1.6 billion by the end of August, the on-chain trading layer has been drifting elsewhere. Fund investors are buying ether exposure; the activity that generates fees and burn is migrating to cheaper rails.
Solana’s own fund products are following the same arc. Bitwise’s Solana Staking ETF crossed $1 billion in assets in late August, ten months after launch, the first US Solana fund to reach that mark. Cumulative net flows into US Solana ETFs stood near $1.3 billion through August 28. The demand is real, and it is aimed at the chain taking the trading share.
The user-side story matters as much as the fund-side one. Solana’s wallet ecosystem has pushed embedded swaps directly into consumer apps, and its DEX aggregators route around congestion automatically. Ethereum’s retail interface is split between rollups, which means bridging friction that Solana simply does not have. Users notice. Aggregated routing data captures exactly that friction.
Borrowing is the quiet grower
The 74% rise in crypto-backed borrowing is the other headline number. Users are increasingly posting existing holdings as collateral to borrow stablecoins or other assets rather than selling, a behavior that tends to show up in markets where holders expect prices to recover but need liquidity now. It also suggests DeFi lending venues on multiple chains are maturing past their earlier boom-and-bust cycles.
For Ethereum, the borrow growth is a partial offset. Lending markets like Aave and Morpho still anchor the deepest collateral markets in DeFi, and most serious on-chain credit still settles there. Trading volume is contestable by chain; collateral depth is not easily moved.
Why it matters for ether
DEX share is a fee story. Every point of share Ethereum loses to cheaper chains is fee revenue that never reaches ETH stakers or burn mechanics, and fee revenue is the fundamental case for holding ether in a market where price has gone sideways. Layer-2 rollups complicate the picture, since they settle to Ethereum and generate blob fees, but the rollup-to-mainnet fee transfer has been smaller than bulls hoped.
The counterargument is that Ethereum trades on different business. Its DEX volume skews toward larger trades, stablecoin settlement and institutional flows, while Solana’s skews retail and speculative. On a per-dollar-of-value-traded basis the gap is narrower than the raw share numbers suggest. SwapSpace’s methodology counts swaps, not dollars-adjusted value, which flatters high-frequency chains.
There is also the infrastructure question. Ethereum’s roadmap has leaned heavily on rollups taking over execution while mainnet specializes in settlement and data availability. If that works, low headline DEX share on mainnet is the design, not the failure. The catch is that rollup fees accrue to rollup operators first, and only a fraction flows back to ETH holders through blob fees. The market has not yet priced a clear answer either way.
Either way, the argument is no longer whether Ethereum keeps DeFi dominance. It is what a multi-chain DeFi world means for the asset that used to own it. The coming months will test whether Ethereum’s rollup roadmap and continued institutional settlement can hold its most valuable segments even as cheap chains take the high-frequency flow.