Which Web Site Has The Best Stock Market Data?

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I've done research on stocks for years. I would mainly use Morningstar, and Yahoo Finance. I trusted their data was accurate. Though recently I started really digging into financials and comparing them to other financial websites. I noticed something alarming. One financial web site would display different data than another!! Why is this? How am I supposed to make accurate financial calls if the data is different on each website?

Perhaps this statement rings true:

A man with a watch knows what time it is. A man with two watches is never sure. Segal's law

For example, take VMware Inc. (VMW) in which I did a long put option in my previous post. Each web site for VMW had a different forward P/E:

  • Yahoo Finance – 49.56
  • MSN – 74.11
  • AOL's DailyFinance – 51.36
  • Morningstar – VMW, 49.3
  • CNBC – 54.0
  • Google Finance – N/A

Which one is correct? One was much higher than the others (MSN), and why the difference? I understand some may have a real-time calculation of the number, while others may do a daily or weekly calculation. UPDATE: I checked later and most had a different forward P/E so some calculate it in real-time. Granted from any of the web sites, you know the stock is way overvalued, but this might not be the case if the stock was in the 20-30 range. The range in the above sample is over 24 points!  In theory, that could make the stock appear cheap on one web site, while expensive on another.

OK, maybe I'm being a little harsh.  Forward P/E with specifically the E (earnings) can be estimated by using what the company expects, or what the consensus of the stock analysts expect. So let's use a simple number that's reported to the SEC, annual revenue for 2010. From the same web sites here is what I found:

  • Yahoo Finance – 2.63 Billion
  • MSN – 2.63 Billion
  • AOL's DailyFinance – N/A (2010 was not available)
  • Morningstar – 2.63 Billion
  • CNBC – N/A (2010 was not available)
  • Google Finance – 2.63 (had to manually add up the quarters)

It's great that the ones that displayed 2010 data had the correct number, but 2 out of the 6 did not have the 2010 data yet. I'll also grant you that VMware, is no Apple (AAPL) so, it's not a highly watched as other stocks, but overall this is concerning. For me, I primarily still use Yahoo Finance and Morningstar for my financial research. I've always assumed their data was accurate.  Based upon this simple sampling, and other stocks I've researched in the past, it appears so.  I've tried to use Google Finance, but find their real-time data is often delayed and lacks some of the financial data I need for my research.

Ideally using the SEC website is where you'll get the most accurate information, but it takes much more time to digest the data. I would prefer not having to always go to a company's 10-Q or 10-K statements.

When investing in stocks, Be aware that the ratios listed on the popular financial web sites might not be accurate or have the latest data.  I find it ironic that 15 years ago, this information was not available publicly. You either got this information from your stockbroker or had to subscribe to an expensive stock research company. Though it's now available for free, it doesn't help if conflicting data is available online.

Readers: What website do you use to do your financial research and why?

Larry Ludwig

Larry Ludwig was the founder and editor in chief of Investor Junkie. He graduated from Clemson University with a bachelor of science in computers and a minor in business. Back in the ’90s, I helped create some of the first financial websites for firms like Chase, T. Rowe Price, and ING Bank, and later went on to work for Nomura Securities. He’s had a passion for investing since he was 20 years old and has owned multiple businesses for over 20 years. He currently resides in Long Island, New York, with his wife and three children.

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  1. I use Yahoo finance and google finance. If I’m really interested in a company, I will download the quarterly report for the company or at least go to the company website.


  2. I use Morningstar and Yahoo Finance for firm specific data and have been pretty satisfied. For economic data I use Bloomberg a lot.
    When looking at P/Es it is important to pin down exactly what you are looking at.
    Trailing 12 months earnings will be considerably different from expected or normalized earnings.
    I recently wrote a post on this at


    Alerting investors to differing numbers at different sites is useful Good post!

    1. Hi DIY,

      I didn’t check trailing P/E (assuming TTM), but that should be the same with all sites.

      I forgot about using Bloomberg’s site.


      VMW forward P/E is 97!?!

      I don’t like their site as it doesn’t have enough data (they obviously want you to buy their terminals). If I wanted to blow the money I would get one 😉

      1. I’m not sure that the P/Es that you report are of concern since they are forward P/Es. Their differences just reflect different earnings forecasts. If earnings per share is expected at $3.00 versus say $3.75 it will make a difference.
        It looks like Bloomberg is not real positive on VMW’s prospects!

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