How Warren Buffett made his money
"Despite Buffett's nearly perfect consistent advice over the past few decades, they don't reflect his earliest days.  His modern philosophy seemed to solidify in the 1970s. You can see that Buffett's earliest days grew faster, at 29.5 % for those partners willing to take on leverage with Buffett, than the last half century, at 19.7%. Not only is Buffett limited by size, as its quite difficult to squeeze one half trillion USD into sub-billion USD investments, but the economy thus market is far different than it was before the 1980s.  He would have to acquire at least 500 billion USD companies outright, and there simply aren't that many available that satisfy all of his modern conditions. The market is much different now than it was when he first started at Graham-Newman because before the 1960s, the economy thus market would collapse and rebound about every few years.  This sort of variance can actually help a value investor because a true value investor will abandon investments when valuations are high and go all in when valuations are low.  The most extreme example was when he tried to as quietly as possible buy up an insurance company selling for something like a P/E of 1 during one of the collapses.  These kinds of opportunities are seldom available anymore, not even during the 2009 collapse. As he became larger, those investments became off limits because it simply wasn't worth his time to find such a high returner if it's only a bare fraction of his wealth.  Also, he started to deviate from Benjamin Graham's methods and started to incorporate Philip Fisher's. By the 1970s, his investment philosophy was more or less cemented.  He tried to balance Graham's avarice for price with Fisher's for value. All of the commentary that special tax dodges or cheap financing are central to his returns are false.  They contributed, but they are ancillary. As one can see by comparing the limited vs general partners, leverage helps enormously, but this is still a tangent. Buffett has undoubtedly built his wealth from the nature of his investments.  The exact blueprint can be constructed by reading every word he has published and any quotes he has not disavowed.  Simply, he buys the highest quality companies in terms of risk-adjusted growth at the best available prices.  Quantitatively, it is a simple strategy to replicate.  NFLX was selling very cheaply during the mid-2000s, WDC sells frequently at low valuations, up and coming retailers frequently sell at low valuations, etc. The key to Buffett's method is emotional control and removing the mental block that price equals value; price is cost, value is revenue, and that concept is the hardest for most to imbibe.  Quoting from the first link: One sidelight here: it is extraordinary to me that the idea of buying dollar bills for 40 cents takes immediately to people or it doesn't take at all. It's like an inoculation. If it doesn't grab a person right away, I find that you can talk to him for years and show him records, and it doesn't make any difference. They just don't seem able to grasp the concept, simple as it is. A fellow like Rick Guerin, who had no formal education in business, understands immediately the value approach to investing and he's applying it five minutes later. I've never seen anyone who became a gradual convert over a ten-year period to this approach. It doesn't seem to be a matter of IQ or academic training. It's instant recognition, or it is nothing. and I'm convinced that there is much inefficiency in the market. These Graham-and-Doddsville investors have successfully exploited gaps between price and value. When the price of a stock can be influenced by a ""herd"" on Wall Street with prices set at the margin by the most emotional person, or the greediest person, or the most depressed person, it is hard to argue that the market always prices rationally. In fact, market prices are frequently nonsensical. and finally  Success in investing doesn’t correlate with I.Q. once you’re above the level of 25. Once you have ordinary intelligence, what you need is the temperament to control the urges that get other people into trouble in investing. There is almost no information on any who has helped Buffett internally or even managed Berkshire's investments aside from Louis Simpson. It is unlikely that Buffett has allowed anyone to manage much of Berkshire's investments considering the consistent stream of commentary from him claiming that he nearly does nothing except read annual reports all day to the extent that he may have neglected his family to some degree and that listening to others will more likely hurt performance than help with the most striking example being his father's recommendation that he not open a hedge fund after retiring from Graham-Newman because he believed the market was topping, and he absolutely idolized his father." "There is actually a recent paper that attempted to decompose Buffett's outperformance. I've quoted the abstract below: ""Berkshire Hathaway has realized a Sharpe ratio of 0.76, higher than any other stock or mutual fund with a history of more than 30 years, and Berkshire has a significant alpha to traditional risk factors. However, we find that the alpha becomes insignificant when controlling for exposures to Betting-Against-Beta and Quality-Minus-Junk factors. Further, we estimate that Buffett’s leverage is about 1.6-to-1 on average. Buffett’s returns appear to be neither luck nor magic, but, rather, reward for the use of leverage combined with a focus on cheap, safe, quality stocks. Decomposing Berkshires’ portfolio into ownership in publicly traded stocks versus wholly-owned private companies, we find that the former performs the best, suggesting that Buffett’s returns are more due to stock selection than to his effect on management. These results have broad implications for market efficiency and the implementability of academic factors."""
I agree with @STATMATT.  Financial statements are the only thing that Warren Buffett & Charlie Munger read. To answer your question though, really depends on what type of investor you are and what information are you trying to extract.   It is essential for the Buffett style (buy & hold).  But if you are a short term or technical investor then I don't see it being of much value. I would recommend reading Intelligent Investor first. It was written slightly more recently (1949) than Security Analysis (1934). More important is that a recently revised edition* of Intelligent Investor was published. The preface and appendix were written by Warren Buffett. Intelligent Investor is more practical as an introduction for a novice. You may decide not to read Security Analysis at all, as it seems more like an academic text or professional's guide i.e. for accounting. Benjamin Graham's Intelligent Investor remains relevant. It is used, successfully, as a guide for value investing, despite the hysteria of market sentiment and day-to-day variations, even extreme volatility. For example, I just read a nice article about applying the value investing principles extolled in Intelligent Investor a few weeks ago. It was written in the context of current markets, which is amazing, to be so applicable, despite the passage of decades. For reference, you might want to glance at this book review (published in March 2010!) of the original 1934 edition of Security Analysis.     * The URL links to a one-paragraph summary by U.S. News & World Report. It does not link to a book sales website! Yes, because we don't want to be China. It also helps stimulate an economy to have your largest portion get most of the wealth.      Warren Buffett can only eat one meal at a time, live in one house at a time, and only has so much time in his day. If you give his yearly salary to 150 people that are right now unable to do any of those things, they will put that money to better use. Warren Buffet and Berkshire Hathaway took a 50% loss in each of the last two bear markets. His stock even lost 10% in 2015 when the S&P lost 8%. He doesn't have a track record to support the claim that his stock performs relatively better in a bear market, so perhaps it's best to take his letter with a grain of salt. Edit: As one commenter points out, Mr. Buffett is comparing the book performance of his fund to the market performance of an index. That is an apples to oranges comparison. It's deceptive at best. "I think this is a bit too simplistic, because you need to keep in mind that Buffet was managing the money as his career. Had he paid the 1% fee he could have ""made more money"" doing something else.    People who hire money managers usually do so because it A. saves them time managing their own portfolios and B. because they don't believe they would do a better job managing it themselves." What the fuck are you talking about you stupid uneducated fuckin retard.  If apple buys 10 billion dollars worth of treasuries the government takes 10 billion dollars out of apples bank of america account and deposits it in theirs. What the fuck is so hard to comprehend about that you fuckin moron? They don't 'make' money you fucking retard. "The scenario you mention regarding capital gains is pretty much the core of the issue. Here's a run-down from PolitiFact.com that explains it a bit. It's important to focus on it being the tax rate, not the tax amount (which I think you get, but I want to reinforce that for other readers).  Basically, most of Buffett's income comes from capital gains and   dividends, income from investments he makes with the money he already   has. Income earned by buying and selling stocks or from stock   dividends is generally taxed at 15 percent, the rate for long-term   capital gains and qualified dividends. Buffett also mentioned that some of the ""mega-rich"" are hedge fund   managers ""who earn billions from our daily labors but are allowed to   classify our income as 'carried interest,' thereby getting a bargain   15 percent tax rate."" We don't know the taxes paid by Buffett's secretary, who was mentioned   by Obama but not by Buffett. Buffet's secretary would have to make a   high salary, or else typical deductions (such as the child tax credit)   would offset taxes owed. Let's say the secretary is a particularly   well-compensated executive assistant, making adjusted income more than   $83,600 in income. (Yes, that sounds like a lot to us, too, but   remember: We're talking about the secretary to one of the richest   people in the world.) In that case, marginal tax rates of 28 percent   would apply. Then, there would be payroll taxes of 6.25 percent on the   first $106,800, money that goes to Social Security, and another 1.45   percent on all income, which goes to Medicare. The secretary’s overall   tax rate would be lower than 28 percent, since not all the income   would be taxed at that rate, only the income above $83,600. Buffett, meanwhile, would pay very little, if anything, in payroll   taxes. In the New York Times op-ed, Buffett said he paid 17.4 percent   in taxes. Thinking of the secretary, it gets a little complicated,   given how the tax brackets work, but basically, people who make   between $100,000 and $200,000 are paying around 20 percent in federal   taxes, including payroll and income taxes, according to an analysis   from the nonpartisan Tax Policy Center. So in this case, the secretary's rate is higher because so much of   Buffett's income comes from investments and is taxed at the lower   capital gains rate. Here's Buffet's original Op-Ed in the NYT for those of you that aren't familiar." "Please note that the following Graham Rating below corresponds to five years: Earnings Stability (100% ⇒ 10 Years): 50.00% Benjamin Graham - once known as The Dean of Wall Street - was a scholar and financial analyst who mentored legendary investors such as Warren Buffett, William J. Ruane, Irving Kahn and Walter J. Schloss. Buffett describes Graham's book - The Intelligent Investor - as ""by far the best book about investing ever written"" (in its preface). Graham's first recommended strategy - for casual investors - was to invest in Index stocks.  For more serious investors, Graham recommended three different categories of stocks - Defensive, Enterprising and NCAV - and 17 qualitative and quantitative rules for identifying them.  For advanced investors, Graham described various ""special situations"". The first requires almost no analysis, and is easily accomplished today with a good S&P500 Index fund. The last requires more than the average level of ability and experience. Such stocks are also not amenable to impartial algorithmic analysis, and require a case-specific approach. But Defensive, Enterprising and NCAV stocks can be reliably detected by today's data-mining software, and offer a great avenue for accurate automated analysis and profitable investment. For example, given below are the actual Graham ratings for International Business Machines Corp (IBM), with no adjustments other than those for inflation. Defensive Graham investment requires that all ratings be 100% or more. Enterprising Graham investment requires minimum ratings of - N/A, 75%, 90%, 50%, 5%, N/A and 137%. International Business Machines Corp - Graham Ratings Sales | Size (100% ⇒ $500 Million): 18,558.60% Current Assets ÷ [2 x Current Liabilities]: 62.40% Net Current Assets ÷ Long Term Debt: 28.00% Earnings Stability (100% ⇒ 10 Years): 100.00% Dividend Record (100% ⇒ 20 Years): 100.00% Earnings Growth (100% ⇒ 30% Growth): 172.99% Graham Number ÷ Previous Close: 35.81% Not all stocks failing Graham's rules are necessarily bad investments. They may fall under ""special situations"". Graham's rules are also extremely selective. Graham designed and backtested his framework for over 50 years, to deliver the best possible long-term results. Even when stocks don't clear them, Graham's rules give a clear quantifiable measure of a stock's margin of safety. Thank you."