For example, SPDR S&P 500 ETF (NYSEArca: SPY) has more than 1,200 open-end mutual funds as shareholders, according to Morningstar data. SPY, which has $183.5 billion in assets under management and an average daily volume of 126.7 million shares, has been a go-to ETF investment for large institutional-sized investors as a liquid vehicle to go in and out of the equities.

ETFs are also favorite picks of asset-allocation funds. For instance, the Rx MAR Tactical Moderate Growth Fund’s only includes ETFs, with a 30.5% iShares 20+ Year Treasury Bond ETF (NYSEArca: TLT), 14.8% SPDR S&P MidCap 400 ETF (NYSEArca: MDY) and 14.7% iShares Core S&P Small-Cap ETF (NYSEArca: IJR), among others.

Related: Global Zero Interest Rate Policies Will Support U.S. Treasury ETFs

“By combining traditional risk-adjusted and tactical risk-managed strategies in a series of sub-advised mutual funds, financial advisors can build portfolios that have the potential to remain diversified as markets move,” according to RiskX Investments.

Financial advisors who are interested in learning more about ETF investment strategies can register for the Tuesday, June 7 webcast here.

CORRECTION: Updated mutual fund names.