Updated from 7 a.m. EDTForbes magazine recently came out with its list of the wealthiest 400 Americans. Many of the names are very familiar, such as the wealthiest, Bill Gates, who along with Paul Allen and Steven Ballmer, rode to their wealth on the success of Microsoft ( MSFT). And, of course, there is Berkshire Hathaway's ( BRK.A) Warren Buffett. Stockpickr has reviewed the top 20 wealthiest from Forbes' list, including Jim Walton and Michael Dell, and compiled a portfolio of publicly traded stocks they're connected to. To read more, visit Stockpickr.com.