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Value investing
As an aside, why does it seem to be difficult to get a conclusive answer to this question? I'm going to start by trying to answer this question and I think the answer here will help answer the other questions.  Here is a incomplete list of the challenges involved: So my question is, is there any evidence that value investing actually beats the market? Yes there is a lot of evidence that it works and there is a lot of evidence that it does not.  timday's has a great link on this.  Some rules/methods work over some periods some work during others.  The most famous evidence for value investing probably comes from Fama and French who were very careful and clever in solving many of the above problems and had a large persistent data set, but their idea is very different from Damodaran's, for instance, and hard to implement though getting easier. Is the whole field a waste of time? Because of the above problems this is a hard question.  Some people like Warren Buffet have clearly made a lot of money doing this.  Though it is worth remembering a good amount of the money these famous investors make is off of fees for investing other peoples' money.  If you understand fundamental analysis well you can get a job making a lot of money doing it for a company investing other peoples' money.  The markets are very random that it is very hard for people to tell if you are good at it and since markets generally go up it is easy to claim you are making money for people, but clearly banks and hedge funds see significant value in good analysts so it is likely not entirely random. Especially if you are a good writer you can make a more money here than most other jobs. Is it worth it for the average investor saving for retirement?  Very, very hard to say.  Your time might be better spent on your day job if you have one. Remember because of the fees and added risk involved over say index investing more "Trading is Hazardous to Your Wealth."