Buffett on Diversification

You can’t be a Bo Jackson in investing. Spread your energies and your capital too many ways, and you are courting disaster. If you have really taken your time and only picked stocks that are bona-fide doozies, there’s no need to diversify for safety. If you’re not supremely confident about the future of each stock in your small portfolio, perhaps you should never have invested in it. Remember, the fewer stocks you have, the more time you can spend becoming an expert in them . You should never own more than ten stocks.