There are a few mutual funds and exchange-traded funds that attempt to mirror portfolios of big hedge fund managers like Carl Icahn and Warren Buffett, but they are using information from regulatory filings that are 90 days old, so both the markets and the portfolios have already shifted.  I am proud to have been selected as one of the first managers to participate in a new, cutting edge platform that replicates private funds in real-time:

http://investing.businessweek.com/research/markets/news/article.asp?docKey=600-201409271049KRTRIB__BUSNEWS_23564_7845-1