Dimitry’s Blog

A bug in Google Finance

October 24th, 2006

Berkshire Hathaway has two classes of stock it offers, Class A and a more affordable Class B.

As of today, Class A trades at $100,600 per share and has a stock ticker of BRK.A and Class B shares are $3,354 per share (1/30th of A) and have a stock ticker of BRK.B.

If you look up BRK.A on Google Finance, everything is fine, but if you look up BRK.B, the automatic Ajax price and today’s price change displays the wrong data for the stock. In fact, it displays data for Class A shares.

To test this, go to http://finance.google.com and enter BRK.B in the search field and hit Enter. Look on top left to see the latest price (should be in $3,000s) and then just stare at that number for a short interval of time. You will see this:

BRK.B stock display BRK.A price data on Google Finance

I wonder if the same error happens for other tickers that have the same annotation (.A and .B)…

Anyways, I plan on filing a bug with Google once I get some free time to figure out how.

  1. Phil Freo

    October 25th, 2006 »

    http://www.google.com/support/finance/bin/request.py?contact_type=problem&submit=Continue

    Saved you some trouble digging around…
    But if you’re lucky, you could wait for them to find this post and email you, like they did for mine. (I’ll post the solution once I confirm it works on my post).

    Hope school is going well for you.