You can migrate liquidity from Uniswap V2 to Uniswap V3.
To migrate V2 liquidity to V3 follow these steps:
- Select a Uniswap v2 or Sushiswap LP position to migrate
Once an LP has connected their wallet and navigated to the Pool page, the Uniswap v3 interface will recognize existing Uniswap v2 and Sushiswap LP positions and offer a seamless migration process.
The migration process is entirely trustless — at no point does the LP relinquish custody of their assets. The migration contract may be viewed here.
LPs must select which position to manage, and then click through to 'migrate'.
- Select Fee Tier
Uniswap v3 introduces multiple fee tiers per pool. Additional fee tier flexibility allows LPs to cater their margins according to their perceived risk.
The 0.05% fee tier is ideal for token pairs that typically trade at a fixed or highly correlated rate, such as stablecoin-stablecoin token pairs (e.g. DAI-USDC). LPs take on minimal price risk in these pools, and traders expect to pay minimal fees.
The 0.30% fee tier is best suited for less correlated token pairs such as the ETH-DAI token pair, which are subject to significant price movements both to the upside and downside. This higher fee is more likely to compensate LPs for the greater price risk that they take on relative to stablecoin LPs.
The 1.00% fee tier is designed for exotic assets, where LPs take on extreme price risk. Relevant assets are those that are particularly subject to monotonic price movements.
- Set Price Range
LPs must select a price range in which to provide liquidity.
Depending on the fee tier selected, the interface will offer the ability to adjust prices in either 0.10%, 0.60%, or 2.00% increments. Manually entered prices will automatically adjust to the closest associated price tick.
If the price moves outside of the LP's specified range, their position will be concentrated in one of the two assets and not earn trading fees until the price returns to their range.
If the specified price range is above the current market price, LPs will be placing 'Range Orders': they will deposit just a single asset and only start earning trading fees once the price moves into their specified range. For more information on Range Orders, please refer to the Uniswap v3 docs.
When making a price range decision, LPs should consider the extent to which they think prices will move over the course of their position's lifetime and their willingness to actively manage their positions (and all the costs associated with more active management).
A narrower price range has the advantage of being more capital efficient. As an example, a v3 LP in a stablecoin-stablecoin pool can provide the same liquidity depth in the $0.99 — $1.01 price range as a v2 LP with just 0.5% of the capital.
However, a narrower price range requires LPs to manage their liquidity on a more active basis as the market price may move outside their specified price range and may increase the price risk they take on.
The following community tools simulate Uniswap v3 positions and may be useful for prospective LPs. Note: that they have not been audited by Uniswap Labs and may be subject to inaccuracies.
- Approve and Add
The final step in the liquidity provision process requires LPs to approve the Uniswap v3 router contract to spend LP tokens on their behalf. Due to the use of permit, these approval transactions do not require gas.
Once the approve transaction has been confirmed, an LP can proceed to add their capital. LPs will be presented with a confirmation pop up with an overview of their specified parameters.
Migrating LPs will be refunded a small portion of both tokens. These refunds are necessary due to rounding issues: exact underlying amounts do not perfectly correspond to liquidity amounts, so the contract must round down.
After the 'add' transaction has been confirmed, LPs can find and manage their new positions on the 'Pool' page.