A longstanding problem for hedge funds has been the limited number of companies that have sufficient amount of publicly traded stock to accommodate the appetite of hedge funds with billions of dollars to invest. The result is "herding" where many large hedge funds end up with similar positions: i.e., a concentration of assets in a small number of stocks. Additionally, these stocks make up a significant component of the S&P 500 which causes the heavily exposed hedge funds to show performance that mimics the S&P 500 as well as each other.
Facebook stock decline hits hedge funds hard
Ezra Zask has been actively managing, consulting, teaching, advising, writing and speaking on hedge fund and investment management issues for over three decades.