Sunday, December 19, 2010

Value investing screener

I needed a way to run a series of financial calculations over the entire Australian Stock Exchange (ASX).

Conventional stock screeners allow you to order by a whole bunch of parameters, but not your own customized formulas.

So I wrote a ASX value screener that focuses specifically on value investing. It consists of a calculator and a screener allowing you to calculate the future intrinsic value along the likes of Warren Buffett, Benjamin Graham and Australia's Roger Mongomerty.

I had this as an excel spreadsheet at first, but I figured if I wanted it - maybe someone else would too. So I used Ruby on Rails with the hobo plugin and I was up and running in a few minutes.

I spent a few months tidying up the design and getting user feedback, I'm pretty happy with the result. There's a small amount of traffic so I'm happy to keep the site up as it's regularly being used.