https://github.com/yellowbean/AbsBox

a cashflow engine wrapper for structured finance professionals
https://github.com/yellowbean/AbsBox

abs cashflow clo mbs modeling structured-finance structuring

Last synced: 8 months ago
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a cashflow engine wrapper for structured finance professionals

• Host: GitHub
• URL: https://github.com/yellowbean/AbsBox
• Owner: yellowbean
• License: apache-2.0
• Created: 2022-06-20T17:09:33.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2025-03-22T07:12:47.000Z (10 months ago)
• Last Synced: 2025-03-22T09:08:21.786Z (10 months ago)
• Topics: abs, cashflow, clo, mbs, modeling, structured-finance, structuring
• Language: Python
• Homepage: https://pypi.org/project/absbox/
• Size: 23.2 MB
• Stars: 51
• Watchers: 6
• Forks: 10
• Open Issues: 9
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-quant - AbsBox - A Python based library to model cashflow for structured product like Asset-backed securities (ABS) and Mortgage-backed securities (MBS). (Python / Financial Instruments and Pricing)
• awesome-quant - github.com/yellowbean/AbsBox

README

          
# AbsBox 

a structured finance cashflow engine wrapper for structured credit professionals:

* transparency -> open source for both wrapper and backend engine, great variable inspection support.

* human readable waterfall -> no more coding/scripting, just *lists* and *maps* in Python !

* easy interaction with Python numeric libraries as well as databases/Excel to accomodate daily work.

[![PyPI version](https://badge.fury.io/py/absbox.svg)](https://badge.fury.io/py/absbox)

[![PyPI download](https://img.shields.io/pypi/dm/absbox)](https://img.shields.io/pypi/dm/absbox)

## installation

    pip install absbox

## Documentation

* English -> https://absbox-doc.readthedocs.io

* Chinese(inactive) -> https://absbox.readthedocs.io

## Goal

* Structuring

  * Easy way to create different pool assets/deal capital structures and waterfalls

  * User can tell how key variables(service fee/bond WAL/bond cashflow etc) changes in different structure of transactions.

* Investor

  * Given powerful modelling language to build cashflow model , user can price bonds of transaction with pool performance assumption

## What it does

* Provide building blocks to create cashflow models for ABS/MBS

* Adapt to multiple asset classes

    * Residential Mortgage / AdjustRateMortgage/ IO,PO,Balloon Mortgages / Auto Loans

    * Corp Loans

    * Consumer Credit

    * Lease (For CMBS)

    * Fix Asset (Solar Panel/Hotel)

    * Receivable

    * SRT/Siginificant Risk Transfer

    * Master Trust

* Features

  * Sensitivity Analysis on different scenarios or deal structures

    * sensitivity analysis on pool performance assumptions

    * sensitivity analysis on capital structures or any deal components

  * Bond Cashflow/Pool Cashflow Forecast, Pricing

## What it takes to master

* Python syntax, nice to have knowledge of functional programming ,or exposure to package `toolz`/`lenses`

* Patience & Persistence, but remember , there is a slack community and responsive support !

## Missing Features ? 

Raise issues or disucssion with the prospectus or spreadsheet how asset cashflow should be projected.

## Data flow



## Data Privacy

User can have option to connect to a private calculation engine in his/her own environment

![Screenshot_2024-08-19_15-09-10](https://github.com/user-attachments/assets/d4d7d6da-db38-46bd-96ed-524c92c1aa27)

## Community & Support

* [Discussion](https://github.com/yellowbean/AbsBox/discussions)

* [Slack](https://absboxhastructure.slack.com)

## Misc

#### Proposed Rule regarding Asset-Backed Securities: File No. S7-08-10