ETF total assets: $1.5 trillion in 1,259 ETFs (May 2013)

1,259 Exchange Traded Funds (ETFs)—with assets totaling $1.5TN—were managed by 38 ETF managers as of May 31, 2013.

Month over month, ETF assets increased $4.3BN, up 0.3%.

In May, assets increased 0.3%, driven by an $11.7BN gain in the Size - Large Cap category.