Equal-weight ETFs tip investment returns By: MarketWatch December 19, 2010 at 14:54 PM EST Rydex attempts to build on the success of its equal-weighted S&P 500 ETF with the launch of similar funds targeting other areas of the stock markets. Read More >> Related Stocks: Alps Equal Sector Weight ETF MSCI Inc Nasdaq 100 EW Index Fund SPDR S&P 500 ETF Trust Standard & Poors 500