A: Maybe someone can explain to me why there's a sudden infatuation with Warren Buffett.  Don't get me wrong, Buffett is a rock star in the financial industry, with a great long-term record. I enjoy reading his annual reports as much as someone who owns 10 shares of the Class A stock.  But what's strange is that Buffett's Berkshire Hathaway has been available to investors for decades as Class A shares. And the Class B shares, with a lower share price, have been available since 1996. Only recently, though, have I been getting several e-mails a week from people wanting to invest in Berkshire. Interestingly, too, many readers are hoping Berkshire is a magic bullet, that one stock they can put all their money into and get rich.  The sudden interest makes me wonder if there's a Buffett bubble brewing? But that's a topic for another day.  For an in-depth analysis of Berkshire Hathaway shares, you can start by reading this.  But most important, don't think Berkshire Hathaway is a risk-free ticket to fabulous wealth. The stock, despite its recent run, has been volatile in the past.  It's not usual for Berkshire to underperform the market for extended periods. You can read about the risks you take investing in Berkshire here.  And that's why putting all your money in a single stock is rarely a good idea. That's one reason you're worried about doing it.  I'm not questioning Buffett's talent as an investor. It's just that tying your portfolio's fortune to one stock will test your patience and your courage.  Matt Krantz is a financial markets reporter at USA TODAY and author of Investing Online for Dummies. He answers a different reader question every weekday in his Ask Matt column at money.usatoday.com. To submit a question, e-mail Matt at mkrantz@usatoday.com. Click here to see previous Ask Matt columns.  You share in the USA TODAY community, so please keep your comments smart and civil. Don't attack other readers personally, and keep your language decent. Use the "Report Abuse" button to make a difference.
Q: I'd like to invest all my money in Berkshire Hathaway stock (BRKA)(BRKB), but I'd get nervous anytime Warren Buffett sneezed or got on an airplane. Is it OK to put all my eggs in Buffett's basket?...