Howard Stanley Marks (born April 23, 1946) is an American investor and writer. He is the co-founder and co-chairman of Oaktree Capital Management, the largest investor in distressed securities worldwide. In 2020, with a net worth of $2.1 billion, Marks was ranked No. 391 on the Forbes 400 rankings of the wealthiest Americans. Funds led by Marks have produced long term returns net of fees of 19% per year. Investors are primarily pension funds and sovereign wealth funds.