Updated from 7:59 a.m. EDTThe 18th most-viewed portfolio on Stockpickr is Cascade Investments, the trading vehicle of billionaire Bill Gates, founder of Microsoft (MSFT) and one of the richest people in the world. Cascade was founded in 1994 and is based in Kirkland, Wash. Many investors aren't aware that Gates' portfolio is a matter of public record. The portfolio includes such stocks as Canadian National Railway ( CNI), Republic Services ( RSG) and Otter Tail ( OTTR) . To read the rest of this story and find out what other stocks Bill Gates owns, please click here.