If you’ve ever stared at a ticker yielding north of 30% and wondered what the catch was, Credit Suisse X-Links Crude Oil Shares Covered Call ETN (NASDAQ:USOI) is the catch made visible. USOI is the rare instrument that pays you a fat monthly check tied to crude oil through a structure most investors misread on ... Not An ETF, Not A Bond, And Definitely Not Boring. Meet USOI