1. SPDR S&P 500 ETF
Symbol: SPY
Assets under management: $265 billion
Strategy: First ETF listed in the US and still the most popular fund in the market. Tracks the S&P 500 Index, offering exposure to large-cap US stocks.
2. iShares Core S&P 500 ETF
Symbol: IVV
Assets under management: $157 billion
Strategy: Exposes investors to large established US companies.
3. Vanguard Total Stock Market ETF
Symbol: VTI
Assets under management: $95 billion
Strategy: Focuses on tracking the CRSP US Total Market Index, which includes large-, mid- and small-cap equity diversified across growth and value styles.
4. Vanguard S&P 500 ETF
Symbol: VOO
Assets under management: $90.7 billion
Strategy: Tracks the performance of the S&P 500 Index, focusing on large-cap equities in the US.
5.iShares MSCI EAFE ETF
Symbol: EFA
Assets under management: $79 billion
Strategy: Tracks an index composed of large- and mid-cap developed market equities excluding the US and Canada and including Europe, Australia, Asia and the Far East.
6. Vanguard FTSE Developed Markets ETF
Symbol: VEA
Assets under management: $70.6 billion
Strategy: Tracks the performance of an index of stock issued by companies in Canada, major markets in Europe and the Pacific region.
7. Vanguard FTSE Emerging Markets ETF
Symbol: VWO
Assets under management: $70.1 billion
Strategy: Focuses on international diversified emerging markets stocks.
8. PowerShares QQQ
Symbol: QQQ
Assets under management: $64 billion
Strategy: Based on the Nasdaq 100 Index, which consists of 100 of the largest domestic and international non-financial companies listed on the Nasdaq Stock Market based on market capitalization
9. iShares Core MSCI EAFE ETF
Symbol: IEFA
Assets under management: $55.5 billion
Strategy: Tracks developed market equity excluding the US and Canada and including companies in Europe, Australia, Asia and the Far East.
10. iShares Core US Aggregate Bond ETF
Symbol: AGG
Assets under management: $53.7 billion
Strategy: Provides a broad exposure to the US investment-grade bond universe and either used to diversify an existing portfolio or as a portfolio’s core. Tracks the Bloomberg Barclays US Aggregate Bond Index.
As of the end of 2017.