Looking today at week-over-week shares outstanding changes among the universe of ETFs covered at ETF Channel, the largest inflow was seen in the iShares MSCI Australia Index Fund (EWA), which added 2.2 million shares, or a 1.8% increase week over week.   And on a percentage change basis, the ETF with the largest increase in inflows was the Proshares Short MidCap400 (MYY), which added 1.3 million shares, for a whopping 100.0% increase in outstanding shares.