Industry WIKI

This is a table of notable American exchange-traded funds, or ETFs. As of 2020, the number of exchange-traded funds worldwide was over 7,600, representing about 7.74 trillion U.S. dollars in assets. The largest ETF, as of April 2021, was the SPDR S&P 500 ETF Trust (NYSE Arca: SPY), with about $353.4 billion in assets. The second-largest was the iShares Core S&P 500 ETF with around $270.

Performance attribution, or investment performance attribution is a set of techniques that performance analysts use to explain why a portfolio's performance differed from the benchmark. This difference between the portfolio return and the benchmark return is known as the active return. The active return is the component of a portfolio's performance that arises from the fact that the po