While browsing a variety of websites, I repeatedly observed significant fluctuations in the same financial metric among different sources. Similarly, the reported financial statements often didn't line up, and there was limited information on the methodology used to calculate each metric.

For example, Microsoft's Price-to-Earnings (PE) ratio on the 6th of May, 2023 is reported to be 28.93 (Stockopedia), 32.05 (Morningstar), 32.66 (Macrotrends), 33.09 (Finance Charts), 33.66 (Y Charts), 33.67 (Wall Street Journal), 33.80 (Yahoo Finance) and 34.4 (Companies Market Cap). All of these calculations are correct, however the method of calculation varies leading to different results. Therefore, collecting data from multiple sources can lead to wrong interpretation of the results given that one source could apply a different definition than another. And that is, if that definition is even available as often the underlying methods are hidden behind a paid subscription.

This is why I designed the FinanceToolkit, this is an open-source toolkit in which all relevant financial ratios (200+), indicators and performance measurements are written down in the most simplistic way allowing for complete transparency of the method of calculation (proof). This enables you to avoid dependence on metrics from other providers that do not provide their methods. With a large selection of financial statements in hand, it facilitates streamlined calculations, promoting the adoption of a consistent and universally understood methods and formulas.

Beyond Equities, it supports Options, Currencies, Cryptocurrencies, ETFs, Mutual Funds, Indices, Money Markets, Commodities, Key Economic Indicators and more, allowing you to obtain historical data as well as important performance and risk measurements such as the Sharpe Ratio and Value at Risk.

Complementing this is the Finance Database 🌎, a database featuring 300.000+ symbols containing Equities, ETFs, Funds, Indices, Currencies, Cryptocurrencies and Money Markets. By utilising both, it is possible to do a fully-fledged competitive analysis with the tickers found from the FinanceDatabase inputted into the FinanceToolkit.

🔌 The Finance Toolkit is also available as an MCP Server

Query 200+ metrics from Claude, Copilot, Cursor, Windsurf or any MCP-compatible client without writing code.

• Hosted: connect to https://financetoolkit.jeroenbouma.com/mcp — OAuth handles the rest on first use.
• Local: uvx --from "financetoolkit[mcp]" financetoolkit-mcp-setup — sets up your client config and API key automatically. See MCP Server Documentation for manual setup.

Also on Smithery, Glama, MCP Servers and more.

Table of Contents

1. Installation
2. Functionality
3. MCP Server
4. Questions & Answers
5. Contributing
6. Mentions
7. Contact

Installation

Before installation, consider starring the project on GitHub which helps others find the project as well.

To install the Finance Toolkit it simply requires the following:

pip install financetoolkit -U

Then within Python use:

from financetoolkit import Toolkit

companies = Toolkit(
    tickers=['AAPL', 'MSFT'],
    api_key="FINANCIAL_MODELING_PREP_KEY",  # replace with your actual API key
)

To be able to get started, you need to obtain an API Key from FinancialModelingPrep. This is used to gain access to 30+ years of financial statement both annually and quarterly. Note that the Free plan is limited to 250 requests each day, 5 years of data and only features companies listed on US exchanges.

Obtain an API Key from FinancialModelingPrep here.

Through the link you are able to subscribe for the free plan and also premium plans at a 15% discount. This is an affiliate link and thus supports the project at the same time. I have chosen FinancialModelingPrep as a source as I find it to be the most transparent, reliable and at an affordable price. I have yet to find a platform offering such low prices for the amount of data offered. When you notice that the data is inaccurate or have any other issue related to the data, note that I simply provide the means to access this data and I am not responsible for the accuracy of the data itself. For this, use their contact form or provide the data yourself.

By default, the Finance Toolkit prioritizes Financial Modeling Prep for data retrieval. If data acquisition from Financial Modeling Prep is unsuccessful (e.g., due to plan restrictions or API key issues), the toolkit automatically switches to Yahoo Finance as a secondary source. To disable this fallback behavior and exclusively use Financial Modeling Prep, set enforce_source="FinancialModelingPrep" during Toolkit initialization. This configuration ensures that an error is raised if Financial Modeling Prep data cannot be accessed. Alternatively, you can set enforce_source="YahooFinance" to exclusively use Yahoo Finance as the data source.

Functionality

This section is an introduction to the Finance Toolkit. Find with the link below fully-fledged code documentation as well as Jupyter Notebooks in which you can see many examples ranging from basic examples to creating custom ratios to working with your own datasets.

Find a variety of How-To Guides including Code Documentation for the FinanceToolkit here.

A basic example of how to use the Finance Toolkit is shown below. Every code snippet in the sections that follow builds on this same companies instance.

from financetoolkit import Toolkit

# Initialize the Toolkit for Apple and Microsoft
companies = Toolkit(["AAPL", "MSFT"], api_key=API_KEY, start_date="2017-12-31")

Each ratio, indicator and metric has a corresponding function that can be called directly, for example ratios.get_return_on_equity or technicals.get_relative_strength_index. Every module also has one or more collect_ functions that return a whole category at once, e.g. ratios.collect_profitability_ratios, useful when you want everything in one call instead of assembling it metric by metric.

Three capabilities cut across nearly the whole toolkit:

• rolling and trailing windows. Many metrics return one value per reporting period by default. Pass rolling=<n> to compute the metric over a sliding window instead, or trailing=<n> for a trailing sum/average (e.g. a trailing 4-quarter sum to annualize a quarterly flow) — turning a snapshot into a proper time series.
• growth and lag. Pass growth=True on almost any get_ or collect_ function to return the period-over-period growth instead of the raw value. lag (an int or list of ints, default 1) controls how many periods back that growth is measured against, e.g. lag=4 for year-over-year growth on quarterly data. Combine with trailing (e.g. trailing=4, growth=True) to get TTM growth.
• standardize (Z-Score). Most get_* methods across Economics, Ratios, Technicals, Risk, Performance, Models, Options and Fixed Income accept standardize=True, converting raw values into standard deviations from their own historical mean/std. Useful for ranking, scoring, or spotting an unusual reading across metrics that otherwise live on incompatible scales.

Every module below also has a How-To Guide notebook and full code documentation (formulas, parameters, worked examples) linked in its own section, see the documentation hub for the complete index.

Discovering Instruments & News

Before analyzing a ticker you often need to find it. The Discovery module is standalone and covers among other things lists of companies, cryptocurrencies, forex, commodities, ETFs and indices.

from financetoolkit import Discovery

# Initialize the standalone Discovery module
discovery = Discovery(api_key="FINANCIAL_MODELING_PREP_KEY")

# Screen for stocks matching a set of criteria
discovery.get_stock_screener(
    market_cap_higher=1000000,
    price_higher=100,
    price_lower=200,
    beta_higher=1,
    beta_lower=1.5,
    dividend_higher=1,
)

Which returns:

Furthermore, you can find in this module stock screeners, sector/industry performance and news feeds and more. Find the Notebook here and the full instrument discovery documentation here.

Obtaining Historical Data

Obtain historical data on a daily, weekly, monthly or yearly basis. This includes OHLC, volumes, dividends, returns and cumulative returns for each corresponding period.

# Obtain historical market data for all tickers
historical_data = companies.get_historical_data()

# Select the results for Apple
historical_data.xs('AAPL', axis=1, level=1)

For example, a portion of the historical data for Apple is shown below.

And below the cumulative returns are plotted which include the S&P 500 as benchmark:

Metrics such as Volatility, Excess Return and Excess Volatility are calculated as dedicated Risk and Performance methods rather than columns on this table to create more efficient and flexible functionalities. Find the Notebook here and the full historical data documentation here.

Obtaining Financial Statements

Obtain an Income Statement on an annual or quarterly basis. This can also be a balance statement or cash flow statement.

# Obtain the Income Statement for all tickers
income_statement = companies.get_income_statement()

# Select the results for Apple
income_statement.loc['AAPL']

For example, the first 5 rows of the Income Statement for Apple are shown below.

And below the Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA) are plotted for both Apple and Microsoft. Find the Notebook here and the full financial statement documentation here.

Obtaining Financial Ratios

Get Profitability Ratios based on the inputted balance sheet, income and cash flow statements. This can be any of the 80+ ratios within the ratios module.

# Collect all Profitability Ratios for all tickers
profitability_ratios = companies.ratios.collect_profitability_ratios()

# Select the results for Microsoft
profitability_ratios.loc['MSFT']

For example, see some of the profitability ratios of Microsoft below.

And below a few of the profitability ratios are plotted for Microsoft.

The 80+ ratios are divided into five categories: Efficiency (asset/inventory/receivables turnover, cash conversion cycle, R&D/SG&A/SBC-to-revenue), Liquidity (current, quick and cash ratios, working capital), Profitability (margins, ROE/ROA/ROIC, cash vs. effective tax rate), Solvency (debt-to-equity, debt-to-capital, interest and dividend coverage) and Valuation (P/E, PEG, Forward P/E, EV multiples, buyback and shareholder yield). It's also possible to define fully custom ratios calculated automatically from the balance sheet, income and cash flow statements. Find the Notebook here and the full ratio-by-ratio documentation here.

Obtaining Financial Models

Get an Extended DuPont Analysis based on the inputted balance sheet, income and cash flow statements.

# Get the Extended DuPont Analysis for all tickers
extended_dupont_analysis = companies.models.get_extended_dupont_analysis()

# Select the results for Apple
extended_dupont_analysis.loc['AAPL']

For example, this shows the Extended DuPont Analysis for Apple:

And below each component of the Extended Dupont Analysis is plotted including the resulting Return on Equity (ROE).

The models module covers 10+ models in total, for example DuPont Analysis, WACC, Economic Value Added (EVA), Altman Z-Score, Beneish M-Score and the Graham Number. Find the Notebook here and the full model-by-model documentation here.

Obtaining Options and Greeks

Get the Black Scholes Model for both call and put options including the relevant Greeks, in this case Delta, Gamma, Theta and Vega. This can be any of the First, Second or Third Order Greeks.

# Get Delta for all tickers across strikes and expirations
delta = companies.options.get_delta(expiration_time_range=180)

# Select the results for Apple
delta.loc['AAPL']

For example, see the delta of the Call options for Apple for multiple expiration times and strike prices below (Stock Price: 185.92, Volatility: 31.59%, Dividend Yield: 0.49% and Risk Free Rate: 3.95%):

Which can also be plotted together with Gamma, Theta and Vega as follows:

The options module is divided into four categories: Option Pricing (Black-Scholes, Binomial Model, Implied Volatility), First-Order Greeks (Delta, Vega, Theta, Rho), Second-Order Greeks (Gamma, Vanna, Charm, Vomma) and Third-Order Greeks (Speed, Zomma, Color, Ultima). Find the Notebook here and the full option pricing and Greeks documentation here.

Obtaining Performance Metrics

Get the correlations with the factors as defined by Fama-and-French. These include market, size, value, operating profitability and investment. The beauty of all functionality here is that it can be based on any period as the function accepts the period intraday, weekly, monthly, quarterly and yearly.

# Get the Fama-French factor correlations for all tickers, quarterly
factor_asset_correlations = companies.performance.get_factor_asset_correlations(period="quarterly")

# Select the results for Apple
factor_asset_correlations['AAPL']

For example, this shows the quarterly correlations for Apple:

And below the correlations with each factor are plotted over time for both Apple and Microsoft.

Beyond Beta, CAPM and the Fama-French factors, the performance module covers around 20+ metrics in total, for example Sharpe Ratio, Sortino Ratio, Calmar Ratio, Omega Ratio and the Correlation Matrix. Most of these also support rolling=<n> for a value that evolves through time instead of one number per period. Find the Notebook here and the full performance metric documentation here.

Obtaining Risk Metrics

Get the Value at Risk for each week. Here, the days within each week are considered for the Value at Risk. This makes it so that you can understand within each period what is the expected Value at Risk (VaR) which can again be any period but also based on distributions such as Historical, Gaussian, Student-t, Cornish-Fisher, or a Peak-over-Threshold Extreme Value Theory (distribution="evt") fit for the tail.

# Get the weekly Value at Risk for all tickers
companies.risk.get_value_at_risk(period="weekly")

And below the Value at Risk (VaR) for Apple, Microsoft and the benchmark (S&P 500) are plotted also demonstrating the impact of COVID-19.

Beyond VaR/CVaR/Entropic VaR, the risk module covers around 20+ metrics in total, for example Conditional Drawdown at Risk, Maximum Drawdown Duration, EWMA Volatility and the Hurst Exponent. Most of these support rolling=<n> for a value that evolves through time instead of one number per period. Find the Notebook here and the full risk metric documentation here.

Obtaining Technical Indicators

Get the Ichimoku Cloud parameters based on the historical market data. This can be any of the 40+ technical indicators within the technicals module.

# Get the Ichimoku Cloud for all tickers
ichimoku_cloud = companies.technicals.get_ichimoku_cloud()

# Select the results for Apple
ichimoku_cloud.xs('AAPL', axis=1, level=1)

For example, see some of the parameters for Apple below:

And below the Ichimoku Cloud parameters are plotted for Apple and Microsoft side-by-side.

The 40+ indicators are divided into four categories: Breadth (McClellan Oscillator, Advancers/Decliners, OBV, ADL, Chaikin Oscillator, TRIN, New Highs - New Lows), Momentum (RSI, MACD, Stochastic, Williams %R, Aroon, CCI, ADX and more), Overlap (SMA, EMA, DEMA, TRIX, WMA, Hull MA, VWAP, Parabolic SAR, Pivot Points, Support/Resistance) and Volatility (ATR, Keltner Channels, Bollinger Bands, Donchian Channels, Volatility Cone). Find the Notebook here and the full technical indicator documentation here.

Obtaining Fixed Income Metrics

Get access to the ICE BofA Corporate Bond benchmark indices and a variety of other bond and derivative related valuations within the fixedincome module.

# Get the ICE BofA Effective Yield for each Credit Rating
companies.fixedincome.get_ice_bofa_effective_yield(maturity=False)

For example, see the Effective Yield for the ICE BofA Corporate Bond Index below for each Credit Rating:

And below a variety of Fixed Income metrics are shown all acquired from the Fixed Income module.

Beyond ICE BofA benchmarks, the fixedincome module covers Bond Valuations (Present Value, Macaulay/Modified Duration, Convexity, Yield to Maturity), Derivative Valuations (Black and Bachelier models for Swaptions), Government Bonds (3-month and 10-year yields) and Central Bank rates (Euribor, ECB and Federal Reserve rates incl. SOFR). It can be called via companies.fixedincome or standalone through from financetoolkit import FixedIncome. Find the Notebook here and the full fixed income documentation here.

Understanding Key Economic Indicators

Get insights for 60+ countries into key economic indicators such as the Consumer Price Index (CPI), Gross Domestic Product (GDP), Unemployment Rates and 3-month and 10-year Government Interest Rates. This is done through the economics module and can be used as a standalone module as well by using from financetoolkit import Economics.

# Get the Unemployment Rate for a selection of countries
companies.economics.get_unemployment_rate()

For example see a selection of the countries below:

And below these Unemployment Rates are plotted over time:

The 40+ indicators are divided into five categories: Government (GDP, government debt/revenue/expenditure/deficit, trust in government), Economy (CPI, inflation, consumer/business co