Those pundits who think guru investor Warren Buffett's time has come and his magic faded away are bolstered by a Bloomberg report that says shares in Berkshire Hathaway (NYSE: BRK.A) slumped some 19% since mid-December. Buffett has been hurt by large investments in both insurance and banks, industries that have suffered tremendously.

Lest you think this short-term lack of performance has swayed investors into looking elsewhere to park their money, many investors are looking at the fall in Berkshire stock as a buying opportunity.

According to Bloomberg, Frank Betz, a partner at Warren, New Jersey-based Carret Zane Capital Management said he'd "put a new client in Berkshire right now. [...] It's probably the highest-quality collection of individual companies that's ever been assembled. Long slides are not in the Berkshire Hathaway lexicon."

With the stock market drop, many contrarian investors think that stocks have hit bottom and are very cheap. Buffett, who is sitting on such a large cash position, may be able to take large stakes in solidly profitable yet beaten up companies.

If he decides to put his cash to work, he has the ability to get deals that happen only once or twice in a lifetime. He may end up providing returns that make his previous track record look just average. For the Buffett investors, the best may is yet come.

Aaron Katsman is the lead Portfolio Manager and Managing Director of America Israel Investment Associates, LLC. and Senior Editor of IsraelNewsletter.com. DISCLOSURE: Writer's fund has no position in any stock mentioned, as of 7/1/08.