My Python project: Doppler Value Investing Calculator

[Jason Hsu]

Finance is one of my hobbies. My specialty is undervalued stocks in
the tradition of Graham/Dodd/Buffett. (As luck would have it, I was
in elementary school in the early 1980s and thus too young to buy US
stocks at dirt cheap prices.)

Just as Doppler radar reveals weather phenomena (like rotation) that
conventional radar does not, Doppler Value Investing reveals things
that conventional value investing does not.

Instead of using earnings and book value to appraise a stock, I use
free cash flow and net liquidity (liquid assets minus ALL liabilities)
to appraise a stock. My method of calculating free cash flow is
different from the official method. The challenge is that I have to
make these calculations myself and can't rely on the secondhand
figures in Value Line, Moody's, Morningstar, etc.

So I enter the figures from the company's official financial
statements into a spreadsheet and use a program to crunch the
numbers. I've done this in VisualBasic for Microsoft Word and then
VisualBasic for OpenOffice. I'm currently working on a version in
Python. Check it out at:
https://github.com/dopplervalueinvesting

The Doppler Value Investing Calculator has shown me a different side
of Python than working on Swift Linux has. I've learned about object-
oriented programming and lists. I'm also starting to learn how to
crunch numbers in Python.

[Govind Garg]

How did the python portion of your project go?

[Jason Hsu]

I have since rebooted Doppler Value Investing.  I've converted most of it to Ruby on Rails.  The biggest change is that I have a Ruby gem called dvi_scrape that downloads financial statements on each stock from ADVFN.com, scrapes the pages for data, processes the data, and saves the results in a PostgreSQL database.  Check it out at http://www.dopplervalueinvesting.com .

[Govind Garg]

is there anything in python line dvi_scrape? that's freaking cool btw. keep up the good work!

On Wed, Oct 16, 2013 at 12:56 AM, Jason Hsu <jhsu8...@gmail.com> wrote:

I have since rebooted Doppler Value Investing.  I've converted most of it to Ruby on Rails.  The biggest change is that I have a Ruby gem called dvi_scrape that downloads financial statements on each stock from ADVFN.com, scrapes the pages for data, processes the data, and saves the results in a PostgreSQL database.  Check it out at http://www.dopplervalueinvesting.com .

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