There are many kinds of hedge fund strategies in the market. HFR, a leading hedge fund industry research group, tracks four major categories – Macro, Equity Hedge, Event Driven, and Relative Value – each with multiple sub-strategies focused on everything from stocks and bonds to emerging markets and credit arbitrage. And, of course, every fund manager will execute these strategies differently based on his or her own research and views of the market.Regardless of the style of strategy or manager, the goal of a hedge fund is to, over time, deliver value, either in the form of excess return over the broad market, or in downside participation, or both. But traditional hedge fund investing is an expensive process, with a significant portion of returns lost to high fees. It exposes investors to a number of unknowns, including idiosyncratic manager risk – a concentrated bet that a single manager or group of managers will outperform the market. It’s illiquid. And, of course, it’s opaque – no hedge fund manager wants to fully reveal his or her investment process over concern they will lose their “edge.”This is where hedge fund replication strategies come in. ETFs using replication seek to identify the key characteristics that drive performance and “replicate” them in a low-cost index-based fund. This approach is supported by a body of research that has generally found that systematic exposures to traditional and non-traditional asset classes is the broadest source of hedge fund returns, supplemented in some (but by no means all) cases by manager skill. The systematic component can be referred to as “beta” (where manager skill is “alpha”) and it’s that beta that most replication strategies seek to capture in a generally liquid, transparent, and low-cost way.Related: Looking Beyond the 60/40 Portfolio Related: A Powerful Tool to Manage Market Volatility For example, a Long/Short Equity manager may own a group of securities long while simultaneously shorting a different group of securities. When you aggregate all of the holdings across multiple Long/Short Equity managers, you find that many of the “stock specific” effects diversify away (much like they do when you have a large group of stocks). You are left with a bunch of “factor” returns such as Large Cap equity vs. Small Cap equity, Value vs. Growth, US equity vs. International equity, etc. Managers trying to generate alpha may, by contrast, make more concentrated positions in an effort to outperform. But this outperformance is by nature difficult to achieve and, for most, non-recurring – how many managers “beat” the market year after year? Beta strategies may be less exciting, but historically they have provided more consistent returns.Like hedge funds themselves, a replication-based fund may focus on a single strategy like Macro or Event Driven, or it may seek to capture the return of hedge funds as an asset class through a multi-strategy approach. These multi-strategy ETFs like QAI , the IQ Hedge Multi-Strategy Tracker ETF, seek to replicate and capture the beta of a broad cross section of the alternative investing universe including long/short equity, global macro, market neutral, event driven, fixed income arbitrage, and emerging markets. This is something like the returns reflected in the HFRI Fund of Funds Index. But that index includes hundreds of funds and is not investable. Replication allows a manager to pursue similar returns in an investable way.As we’ve discussed in our recent blog, “ Merger arbitrage strategies – a powerful tool to manage market volatility “, these strategies can play an important role in a portfolio, particularly during periods of market volatility like we’re currently experiencing. By design, they look to provide positive returns with less exposure to traditional sources of risk. With a multi-asset approach providing broad access to the hedge fund universe, they’re “hedged” in the true sense of the word. In the most recent ten-year period, from 2008-2017, multi-asset strategies were among the least volatile asset classes, with only minimal bouts of volatility above core fixed income. For investors who want to maintain exposure to the market while seeking to manage risk, these funds are worth considering.