as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
how can i buy shares of oil? i'm told it's done through etfs. how's that related to oil prices per barrel?
user
while we're not supposed to make direct recommendations, and i am in no way advising anything, uso an etf that buys light sweet crude oil futures with the intention of mirroring the price movements of oil.
assistant