Assets that were held in U.S.-based exchange-traded funds increased 0.5% in July, to $578 billion, according to a monthly report from State Street Global Advisors, a unit of State Street Corp.
During the month, 17 ETFs were introduced and seven were liquidated, bringing the total to 708 at July 31, according to the State Street data released Monday.
Micro-cap and small-cap ETFs had the greatest asset growth, up 38.6% and 17%, respectively.
Fixed-income ETF assets grew 5.4%. These funds now hold more than 8% of all U.S. ETF assets.
Assets held in international ETFs fell 2.8%.
Among industry sectors, energy lost more than 8.3%, and technology gained 9.5%.
Assets in financial ETFs fell 3.4%, to $383 million.
Volume declined to $77 billion, down from $85 billion in June. This was more than 13% of the U.S. ETF market's total value, according to the State Street report.
