Warren Buffett has created incredible wealth for shareholders of Berkshire Hathaway. It's been very inspiring to individual investors that he did it -- as he alluded to in his 1988 letter to shareholders -- by focusing on investing in quality companies and holding for the long term, without being fazed by occasional market volatility.

Has Warren Buffett given up on stocks amid overstretched valuations? That’s the big question, as the “Oracle of Omaha” has been a net seller in recent months.

Arguably the world's greatest stock picker isn't picking many stocks these days. Warren Buffett has been a net seller of stocks for eight consecutive quarters. There's a reason Buffett isn't buying many stocks -- and it's the same reason he ranks among the greatest investors of all time.

With as impressive of an investing track record as Warren Buffett has achieved, you'd expect his Berkshire Hathaway portfolio would be loaded with great stocks. And you'd be right. The good news is that you don't need a huge amount of cash to buy many of those stocks.