This repository contains several python scripts that are used by Gamma Strategies to simulate the performance of Uniswap v3 liquidity provision strategies' performance and evaluate risks. The main scripts of the package are:

1. ActiveStrategyFramework.py base code of the framework which executues a Strategy, conducting either back-testing simulations (simulate_strategy function and passing in historical swap data), or conducting a live implementation of the strategy.
2. ResetStrategy.py first implementation of a Strategy which uses the empirical distribution of returns in order to predict future prices and set ranges for the LP positions.
3. AutoRegressiveStrategy.py second implementation of the Strategy, using an AR(1)-GARCH(1,1) model.
4. GetPoolData.py which downloads the data necessary for the simulations from two potential sets of data: The Graph + Bitquery + Flipside Crypto, and blockchain-etl via Google BigQuery.
5. UNI_v3_funcs.py which is a slightly modified version of JNP777's Python implementation of Uniswap v3's liquidity math.

In order to provide an illustration of potential usage, we have included two Jupyter Notebooks that show how to use the framework:

• 1_Reset_Strategy_Example.ipynb runs an simple 'reset strategy' in the spirit of the work reviewed in this Gamma Strategies article.
• 2_AutoRegressive_Strategy_Example.ipynb does the same but with the Autoregressive strategy.
• 3_Uniswap_Simulation.ipynb applies the Autoregressive strategy on the UNI-ETH 0.30% pool.

We have constructed a flexible framework for active LP strategy simulations that uses the full Uniswap v3 swap history in order to improve accurracy of fee income. Thefore simulations are available in the time period since Unsiwap v3 was released (May 5th 2021 is when swap data starts to show up consistently).

In order to simulate your own strategy clone this repository to your computer, and implement your algorithm in a new Strategy script, where you define a class which must include the following functions (see the ResetStrategy.py script for an example):

1. set_liquidity_ranges computes where the LP ranges are set in an LP strategy and stores the virtual liquidity placed for each position.
2. check_strategy to implement your algorithm's rebalancing logic.
3. dict_components to extract the relevant data from each strategy observation in order to evaluate performance and plot charts.

Once you have your Strategy class defined, you can use the ActiveStrategyFramework.py structure to conduct backtesting simulations or run the code live. See the Jupyter notebooks for how to conduct the implementation.

The template is currently adapted to the strategies used by Visor Finance's Hypervisor, which set a base liquidity provision position, and a limit one with the tokens that are left over as may occur due to concentrated liquidity math and single sided deposits, but this could be generalized as well.

The framework is set up to use two potential data sources in order to conduct the simulations, with the relevant functions available in GetPoolData.py:

**blockhain-etl via Google BigQuery **

The pattern to use these data sources can be seen in 3_Uniswap_Simulation.ipynb. The data sources is blockchain-etl, which indexes the relevant events from Uniswap v3, and can be easily queried through Google's BigQuery service. This data source can offer all the required fields for the simulations, but may incur a cost.

Instructions

1. Install Python client for Google BigQuery
2. Generate a service account key and download to your computer
3. Generate a file called config.py in the directory where the ActiveStrategyFramework is stored and point the direction of the file as a variable called GOOGLE_SERVICE_AUTH_JSON (eg. GOOGLE_SERVICE_AUTH_JSON=/point/to/file/auth_key.json)
4. Follow the pattern outlined in 3_Uniswap_Simulation.ipynb
5. If you want to simulate a different pool simply change the uni_pool_address variable with the pool address that you want to simulate.

The Graph + Bitquery + Flipside Crypto

The pattern to use these data sources can be seen in 2_AutoRegressive_Strategy_Example.ipynb. The data sources are:

• The Graph: We obtain the full history of Uniswap v3 swaps from whatever pool we need, in order to accurately simulate the performance of the simulated strategy.
• Bitquery: We obtain historical token prices from Uniswap v2 and v3.
• Flipside Crypto: We obtain the virtual liquidity of the pool at every block, which is used to approximate the fee income earned in the pool, as described in their documentation.

Instructions

1. Obtain a free API key from Bitquery.
2. Save it in a file in config.py in the directory where the ActiveStrategyFramework is stored as a variable called BITQUERY_API_TOKEN (eg. BITQUERY_API_TOKEN = XXXXXXXX).
3. Generate a new Flipside Crypto query like the one in the example_flipside_query.txt file, with the pool_address for the pair that you are interested. Note that due to a 100,000 row limit, we generate two queries for the USDC/WETH 0.3%, which explains the BLOCK_ID condition, to split the data into reasonable chunks. A less active pool might not need this split.

There are several potential sources for imprecision, as for example gas fees are not taken into account, and can have a significant impact on performance in particular for small positions in high fee regimes. There could be rounding issues from the Python implementation of the Solidity code, and differences from the pool price due to Bitquery's price feed not being identical to that of the pool (as expected).