Total US-listed ETF Assets reached $3.54 trillion at the end of Q2 2018, a 18.7% year-over-year increase. Estimated net asset flows in Q2 2018 totaled $57 billion, down slightly from Q1 2018.

US Equity ETFs received the strongest estimated net inflows in Q2 2018, totaling $38 billion, rebounding from a lackluster Q1, in which estimated net inflows totaled just $1.3 billion. Sector Equity ETFs received an estimated $2.3 billion in net inflows for Q2 2018, down from $10.2 billion in Q1.

Taxable Bond ETFs received the second highest estimated net inflows in Q2 2018 with $29 billion, nearly doubling the total from Q1. Municipal Bond ETFs received nearly $2 billion in estimated net inflows during Q2 2018, setting a new high-water mark for net inflows in a calendar quarter for the category.

International Equity ETFs had the largest estimated net outflows during Q2 2018, totaling $12 billion, following a strong Q1, in which the category added $33 billion in estimated net inflows.

Commodities ETFs and Alternatives ETFs both had estimated net outflows in Q2 2018, totaling $0.9 billion and $0.8 billion, respectively.