The ETF industry moves fast. Each week, we run the numbers on the ETF industry, and tally up the winners and losers in terms of fund flows and total assets. This past week was a rough one as investors pulled over $26 billion from ETFs, 85% of which came from the three biggest firms: iShares, Vanguard and State Street. The SPDR S&P 500 ETF (SPY A) lost almost $6.7 billion in assets on its own. The biggest loss by percent of AUM went to Acquirers Funds and their single fund, (ZIG). While outflows were a measly $5 million, that accounted for almost 24% of the firm’s assets. But all is not lost. Invesco was the week’s big winner with $731 million in net flows, while its star fund the Invesco QQQ (QQQ A-) gained $1.5 billion in new assets. Investors also continue to show favor to the SPDR Gold Trust (GLD A-) to the tune of $1.3 billion inflows over the past week.