POWA was created on 2006-12-15 by Invesco. The fund's investment portfolio concentrates primarily on total market equity. The ETF currently has 174.6m in AUM and 51 holdings. POWA tracks an index that selects US large- and mid-cap stocks of companies considered well-positioned to maintain stable profit margins in all market conditions. Stocks satisfying a four factor screening process are included in the index, on an equal-weight basis.