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https://github.com/vollib/vollib

Fundamentally a swig/python wrapper around Peter Jaeckel's lets_be_rational. lets_be_rational focuses exclusively on Black76, while Vollib extends this to add support for Black-Scholes and Black-Scholes-Merton.
https://github.com/vollib/vollib

Last synced: about 1 month ago
JSON representation

Host: GitHub
URL: https://github.com/vollib/vollib
Owner: vollib
License: mit
Created: 2015-04-03T12:13:28.000Z (over 9 years ago)
Default Branch: master
Last Pushed: 2023-06-05T12:27:02.000Z (over 1 year ago)
Last Synced: 2024-08-02T07:23:23.470Z (4 months ago)
Language: Python
Homepage: http://www.vollib.org/
Size: 70.3 KB
Stars: 655
Watchers: 17
Forks: 91
Open Issues: 2
Metadata Files:
- Readme: README.MD
- License: LICENSE.TXT

Awesome Lists containing this project

awesome-systematic-trading - vollib - Fundamentally a swig/python wrapper around Peter Jaeckel's lets_be_rational. lets_be_rational focuses exclusively on Black76, while Vollib extends this to add support for Black-Scholes and Black-Scholes-Merton. (Analytic tools / Pricing)
awesome-quant - vollib - vollib is a python library for calculating option prices, implied volatility and greeks. (Python / Financial Instruments and Pricing)
awesome-quant - vollib - vollib is a python library for calculating option prices, implied volatility and greeks. (Python / Financial Instruments and Pricing)

README

# `vollib`

`vollib` is a python library for calculating option prices,
implied volatility and greeks. At its core is Peter Jäckel's
source code for `LetsBeRational`, an extremely fast and accurate algorithm
for obtaining Black's implied volatility from option prices.

Building on this solid foundation, `vollib` provides functions
to calculate option prices, implied volatility and greeks using
Black, Black-Scholes, and Black-Scholes-Merton. `vollib`
implements both analytical and numerical greeks for each of the three pricing formulae.

### About the initial release

This is the initial release of `vollib`. Tests and documentation are still incomplete.

### Dependencies

`vollib` was written in Python 2.7. It depends on the ```lets_be_rational``` package, a simple (SWIG) wrapper around Peter Jäckel's original C source code.

To install via pip, type the following:

```
>>> pip install vollib
```

Installing `vollib` via pip will automatically install the necessary dependencies,
except for SWIG, pip, and Python. This has been tested to work on Windows, Linux and Macintosh OS X.

Python, pip and SWIG must be installed prior to installing ```vollib```.

`lets_be_rational` is quite stable compared to `vollib`, which is likely to be updated frequently.

For those who wish to clone the vollib repo, you might prefer to install `lets_be_rational`
separately with pip, since this takes care of the C compilation.

### About "Let's be Rational":

["Let's Be Rational"](http://www.pjaeckel.webspace.virginmedia.com/LetsBeRational.pdf) is a paper by [Peter Jäckel](http://jaeckel.org) showing *"how Black's volatility can be implied from option prices with as little as two iterations to maximum attainable precision on standard (64 bit floating point) hardware for all possible inputs."*

The paper is accompanied by the full C source code, which resides at [www.jaeckel.org/LetsBeRational.7z](www.jaeckel.org/LetsBeRational.7z).

Permission to use, copy, modify, and distribute this software is freely granted,
provided that this notice is preserved.

WARRANTY DISCLAIMER
The Software is provided "as is" without warranty of any kind, either express or implied,
including without limitation any implied warranties of condition, uninterrupted use,
merchantability, fitness for a particular purpose, or non-infringement.
```

### Links:

* [Let's Be Rational](http://www.pjaeckel.webspace.virginmedia.com/LetsBeRational.pdf)

* [pip](https://pypi.python.org/pypi/pip)

* [SWIG](http://www.swig.org/download.html)

* [Licence](http://vollib.org/license)

* [Vollib Home](http://vollib.org)