Aerodrome Finance and Velodrome Finance merged at 00:00 UTC on October 22, 2026, forming Aero — a unified onchain spot exchange deployed across seven EVM-compatible networks. The combined entity targets roughly $120 billion in monthly DEX trading volume across Ethereum mainnet, Base, OP Mainnet, ...
"Their margin is our opportunity." — Alex Cutler, Founder and CEO, Dromos Labs
Aerodrome Finance and Velodrome Finance merged at 00:00 UTC on October 22, 2026, forming Aero — a unified onchain spot exchange deployed across seven EVM-compatible networks. The combined entity targets roughly $120 billion in monthly DEX trading volume across Ethereum mainnet, Base, OP Mainnet, Arbitrum, Robinhood Chain, Ink, and Arc. AERO holders receive a 1:1 token migration; VELO holders convert at 0.044:1, giving the Aerodrome community 94.5% of the new supply and Velodrome holders 5.5%.
The merger replaces the ve(3,3) emissions model that both protocols ran independently with a new mechanism called the AER Engine, which pegs token emissions to projected pool revenue rather than fixed schedules. Initial maximum total supply is approximately 2.127 billion tokens. The restructuring is the largest DEX consolidation by combined trading volume in 2026 and signals a shift in how liquidity incentive protocols manage inflation.
Prior to the merger, Aerodrome operated as the dominant DEX on Coinbase's Base chain. In 2025, the protocol processed more than $177 billion in total trading volume, according to research by analyst Abbas Khan. By Q2 2026, Aerodrome posted $44.7 billion in quarterly volume, a 33.2% increase from Q1 2026, capturing 10.9% of top-10 DEX volume, according to CoinGecko data.
Monthly fee and revenue data for Aerodrome in 2026, per DefiLlama:
| Month | Fees | Protocol Revenue | |-------|------|-----------------| | January | $9.57M | $7.91M | | February | $7.73M | $5.69M | | March | $7.03M | $4.71M | | April | $9.12M | $4.56M | | May | $11.25M | $6.80M | | June | $8.93M | $4.74M | | July | $6.40M | $4.54M |
In the four weeks ending September 2026, revenue directed to veAERO holders reached $14.9 million: $6.1 million from trading fees and $8.9 million from Liquidity and Launch Payments. TVL stood at $381 million as of October 19, with $377.69 million on Base and $3.4 million on Arc.
Velodrome, operating on Optimism, carried a significantly smaller balance sheet. TVL fluctuated between $34 million and $45.18 million throughout 2026, ending September at $40.24 million. The combined pre-merger TVL was approximately $422 million.
Aerodrome held a consistent position as the third-largest DEX globally, with a 7.4% market share expanding to 10.9% by Q2 2026. Throughout 2025 and into 2026, the protocol consistently held over 50% of DEX TVL on Base, ahead of Uniswap, PancakeSwap, and Balancer on that chain.
The consolidation follows a structure more common in traditional corporate M&A than in DeFi. Dromos Labs, the development entity behind both protocols, unified the two codebases and governance structures into a single deployment.
Token conversion terms heavily favor the larger protocol. AERO holders receive a 1:1 swap into the new AERO token. VELO holders receive 0.044 new AERO per VELO — reflecting Velodrome's smaller TVL, lower trading volume, and narrower chain footprint. The 94.5%-to-5.5% supply split mirrors the approximate ratio of economic activity between the two protocols.
Existing vote-escrowed positions (veAERO and veVELO) convert to sAERO, a new staked token that is transferable and does not rebase. This marks a departure from the non-transferable veToken standard that has characterized ve(3,3) DEXs since Solidly's 2022 launch. The transferability of sAERO introduces secondary market liquidity for staked positions — a structural change with implications for how governance power trades and concentrates.
AERO traded at $0.85 on October 21, with a market capitalization of $831.9 million and 24-hour trading volume of $77.6 million, according to CoinGecko. The token rallied 48% in the four weeks preceding the merger, outpacing both Bitcoin and Ether over the same period, per CryptoBriefing.
The most consequential technical change in the merger is the replacement of the ve(3,3) weekly voting model with the AER Engine, a mechanism that ties emissions to projected pool revenue.
Under the prior system, veToken holders voted weekly to direct emissions toward specific liquidity pools. This model, derived from Andre Cronje's Solidly design, suffered from well-documented problems: when emissions exceeded the value of voting rewards, the rational strategy shifted from "lock and vote" to "receive and sell," creating downward price spirals and TVL flight.
The AER Engine addresses this through three mechanisms:
Revenue-pegged emission rates. Reward rates are denominated in dollar terms and capped against projected pool revenue. The long-term target sets average rewards across the exchange at approximately 1.2 times projected revenue. AERO above a pool's cap goes unminted.
Dynamic inflation bands. Current annualized issuance is approximately 11% of supply, or about 8% after the 1.2x revenue cap. A hard ceiling of 20% annual inflation applies.
Predictive allocation. sAERO holders can adjust pool allocations multiple times per week, replacing the fixed weekly epoch. Allocation changes carry a 47-hour cooldown to prevent gaming.
The design attempts to solve what DeFi researchers call the "emissions dial problem" — the tendency of fixed-schedule emissions to overshoot actual demand for liquidity, diluting token value and ultimately pushing capital out. By linking emissions to observed revenue, the AER Engine aims to keep incentive spending proportional to the economic activity each pool generates.
Whether this mechanism works as designed remains untested at scale. The 1.2x target implies the protocol will consistently spend 20% more in incentives than it earns in fees — a deficit that must be funded by token price appreciation or supply reduction to remain sustainable.
Aero launches simultaneously on seven networks: Ethereum mainnet, Base, OP Mainnet, Arbitrum, Robinhood Chain, Ink, and Arc. According to Dromos Labs, these chains collectively handle approximately $120 billion in monthly DEX trading volume.
The inclusion of Robinhood Chain and Ink alongside established networks is notable. Both are newer entrants to the EVM ecosystem: Robinhood Chain, backed by the brokerage firm, targets retail users already in the Robinhood app; Ink, developed by Kraken, serves a similar retail-bridge function. Neither chain has a dominant native DEX, which lowers the barrier to entry for Aero but also means liquidity depth is unproven.
The multi-chain deployment increases Aero's addressable market from approximately $7 billion (Base plus Optimism) to over $63 billion in aggregate TVL across the seven networks. This expansion converts a chain-specific monopoly into a cross-chain competition against Uniswap (33% market share, $90.95 billion in 30-day volume), PancakeSwap ($29.29 billion), and chain-specific incumbents on Arbitrum and Ethereum mainnet.
The protocol uses what it calls MetaDEX03 technology for cross-chain execution. Technical details on how this differs from standard bridge-and-swap architectures were not publicly available at the time of writing.
The merger occurs during a period of structural growth for decentralized exchanges. DEX market share of total crypto trading volume has expanded from 4-5% in 2021 to approximately 15-20% in 2026, according to CoinGecko and Blockonomi data.
Current market share among top DEXs (Q2 2026, by volume):
| Protocol | 30-Day Volume | Market Share | |----------|--------------|--------------| | Uniswap | $90.95B | ~33% | | PancakeSwap | $29.29B | ~11% | | Aerodrome (pre-merger) | $22.9B | ~7.4% |
Chain-specific dominance remains the norm. As of September 23, 2026, PumpSwap held 67.4% of Solana DEX volume, PancakeSwap held 95.4% of BNB Smart Chain, and Uniswap led on nine separate chains. Aerodrome owned Base.
The consolidation of Aerodrome and Velodrome — both ve(3,3) designs from the same development team — eliminates redundancy and creates a unified competitor against Uniswap's multi-chain strategy. Uniswap operates on more chains but does not share 100% of protocol fees with token holders. Aero's fee structure routes all exchange revenue to sAERO stakers, a differentiation that may attract yield-seeking capital.
The new AERO token launches with an initial maximum supply of approximately 2.127 billion tokens. Key structural features:
Pre-merger, approximately 50% of AERO supply was locked in vote-escrow positions with an average lock duration of 3.7 years, according to TokenIntel research. The conversion to transferable sAERO may alter lockup behavior: holders who previously committed to multi-year locks now have liquid exit options. If a significant portion of converted sAERO enters the market, it could create short-term sell pressure.
Untested emissions model. The AER Engine has no production history. Revenue projections across seven chains with varying liquidity depths introduce forecast error. If the engine overestimates revenue, emissions exceed sustainability; if it underestimates, liquidity incentives fall short.
sAERO liquidity dynamics. Converting illiquid veTokens to transferable sAERO may trigger a "lockup release" effect. Approximately 50% of pre-merger supply was locked. The speed at which former ve-holders choose to sell or hold sAERO will determine near-term price stability.
Multi-chain execution risk. Deploying a unified DEX across seven chains requires consistent liquidity depth on each. Newer chains (Robinhood Chain, Ink, Arc) have limited DeFi ecosystems. If liquidity fails to materialize on some chains, emissions to those pools become pure dilution.
Competitive response. Uniswap, with 33% DEX market share, has a multi-chain presence and deeper liquidity on most chains where Aero is deploying. Uniswap Labs has signaled interest in fee-sharing mechanisms of its own. A fee-distribution war could compress margins for both protocols.
Governance centralization. With 94.5% of supply allocated to former Aerodrome holders, governance power is concentrated. The 0.044:1 VELO conversion ratio, while reflecting economic reality, effectively marginalizes the Velodrome community in future protocol decisions.
The Aerodrome-Velodrome merger is a consolidation play. Two protocols built by the same team, running the same model on adjacent chains, have unified into a single entity to compete for a larger share of onchain spot trading. The economic logic is straightforward: eliminate duplication, pool liquidity incentives, and expand the addressable market from two chains to seven.
The more interesting development is the AER Engine. The ve(3,3) model popularized by Solidly in 2022 solved the "how do you attract liquidity" problem but created new ones around emissions sustainability and governance concentration. Aero's response — tying emissions to revenue rather than fixed schedules — is an attempt to make incentive spending self-correcting. If the mechanism works, it provides a template for the dozens of ve(3,3) forks operating across DeFi. If it fails, the seven-chain deployment amplifies the losses.
The data will determine which outcome materializes. Monthly emission rates, TVL migration patterns on newer chains, and the sAERO secondary market will provide the first signals within 60 to 90 days.