Highland Funds I - Highland Opportunities and Income Fund is a closed-end fixed income mutual fund launched by Highland Capital Management, L.P. and managed by Highland Capital Management Fund Advisors, L.P. It invests globally in fixed income markets, primarily in floating rate loans and other floating rate investments, with an emphasis on adjustable rate senior loans to corporations and partnerships. The fund seeks below investment grade securities and also invests through derivatives, benchmarking its performance against the Credit Suisse Leveraged Loan Index. Formerly known as Highland Funds I - Highland Income Fund, it was formed on January 13, 2000 and is domiciled in the United States.