Buffetted: Why the world’s greatest investor changed his strategy

Warren Buffett’s latest annual letter to shareholders demonstrates once again that the world’s greatest investor marches to his own drummer.

The letter, published Friday, shows that Mr. Buffett’s flagship company,Berkshire Hathaway Inc., continues to hold a highly concentrated portfolio. About 64 per cent of its holdings are in only five stocks.

Mr. Buffett has held a concentrated portfolio throughout his illustrious career, making a mockery of the modern portfolio theory taught in universities around the world, which holds that wide diversification among hundreds of stocks is desirable.

But while Mr. Buffett has always believed in the benefits of holding highly concentrated portfolios, his opinion about what kind of stocks to invest in has evolved over the years. Investors who want to emulate the Oracle of Omaha should ponder the lessons of his career.

Mr. Buffett’s current policy is to buy great companies at reasonable prices. His portfolio is focused on market leaders, such as Coca-Cola, American Express and Wells Fargo, that he has held for years. Once he invests in a great company, he says he wouldn’t care whether the markets were to close for the next three years. He buys and holds as if he were the owner; he never buys and sells as a trader.

Mr. Buffett’s recent deal to buy H.J. Heinz Co. is a perfect fit for his philosophy. In many ways, the ketchup maker is like Coca-Cola. Both have intergenerational customer captivity – an extremely rare thing – forged out of habits built up while consumers are children. For these stocks the best strategy is to buy and hold – you never sell, as their intrinsic value is always one step ahead of the stock price.

Buffett Still Buying Stocks, Sees 'Good Value'

Warren Buffett still sees "good value" in stocks, even as the Dow Jones Industrial Average approaches an all-time high.

On CNBC's Squawk Box, Buffett said Berkshire Hathaway is still buying stocks, even though prices have increased.

"Anything I bought at $80 I don't like as well at $100. But if you're asking me if stocks are cheaper than other forms of investment, in my view the answer is yes. We're buying stocks now. But not because we expect them to go up. We're buying them because we think we're getting good value for them."

He said stocks are not "as cheap as they were four years ago" but "you get more for your money" compared to other investments. He added, "The dumbest investment, in my view, is a long-term government bond."

Buffett revealed that a potential acquisition had been "mentioned" to him and he will be exploring the idea, no deal is imminent. "That's always a low probability. Whether it's a five percent or ten percent, who knows? But I get excited when I hear about possibilities." Asked what sector the company is in, he replied with a laugh that it is "in business."

(Read More: Buffett: How to Get 'Fair Shake' on Wall Street)

Buffett praised Berkshire's new portfolio managers, Todd Combs and Ted Weschler, and announced publicly for the first time that they'll soon be getting an additional $1 billion to work with. He joked they are making his decisions "look bad" by comparison. The new money will increase the size of their portfolios to $6 billion from $5 billion.

Buffett said it's "quite unlikely" he'll hire another portfolio manager, in part because he's so happy with Combs and Weschler. "We hit the jackpot with these two."

Buffett isn't too worried that the automatic government spending cuts known as the sequester will slow down the U.S. economy too much.

"We're continuing to see a slow recovery," he said. "It hasn't taken off, but it hasn't stopped either."

Buffett said that while the sequester will reduce the government's stimulus of the economy by cutting back on the deficit the remaining spending is still providing the economy a lot of "juice." 

"It's not galloping at all, but we are making progress bit by bit. Everybody would love to see it faster. But it's not going into reverse and I do not think the sequester will cause it to go into reverse."

Warren Buffett's Advice: How to Get 'Fair Shake' on Wall Street

During his live appearance on CNBC's "Squawk Box" today, Berkshire Hathaway Chairman Warren Buffett had some valuable advice for individual investors on how to make sure they are getting a "fair shake" on Wall Street.

BECKY QUICK: Do you think, and I ask this because there have been so many scandals that people think about, Libor, and they think about a lot of the deals behind the scenes that have been dragged out. A lot of Main Street investors think they can't get a fair shake on Wall Street. Can they?

WARREN BUFFETT: Well, they pay a lot of expenses in many cases. They don't need to. They should buy a low-cost index fund and they can participate in the growth of America over the next 20 or 30 or 40 years and they'll do fine. But if they're paying high fees to achieve that same result, they're going to get hurt. They should look very carefully at costs. But they should hold a diversified group of really high-class companies, which you can do by buying an index fund. And then they should forget it. They should just pretend the stock market closes for five years and they shouldn't look at prices every day...

The people selling you securities are often selling you things they make a lot of money in. The first question you should ask of anybody selling you securities is, 'How are you getting paid and how much are you getting paid?' The truth is you can own index funds with a very, very low cost and you will end up getting the same performance that you get from people who charge you a lot more.

So, you always want to look at costs. When somebody comes around to you and says, 'I'm going to sell you this wonderful security but there's this big chunk in it for me," you get suspicious.

(Read More: Buffett Still Buying Stocks, Sees 'Good Value')

As they say, when a person with experience meets a person with money, the person with the money gets the experience and the person with the experience gets the money.

(Read More: You Tweet, Buffett Answers)

From cnbc.com