This ETF tracks a dynamic benchmark which is based on top holdings of hedge fund managers. The underlying index is constructed by analyzing 13F filings, which are regulatory filings that institutional investors with $100 million or more in assets under management are required to file with the SEC within 45 days of the end of each quarter. As such, GURU attempts to mimic the positions and strategies implemented by professional money-managers, many of whom have a proven track record of consistently generating alpha. There are some drawbacks to this strategy however; besides the time lag associated with the SEC paperwork, there is also the issue of incompleteness of these filings and the nuances of net exposure reported. Investors should also consider ALFA, which offers a generally similar strategy for a steeper price tag; the distinguishing feature being that ALFA can vary between a traditional long only portfolio and a market hedged strategy based on relative price targets.