The S&P 500 ETF (NYSEARCA:SPY) turned 20 this week as the index rose about 1% in large part due to a 1% gain on Friday. The Equal Weight S&P ETF (NYSEARCA:RSP) slightly outperformed gaining almost 1.2% for the week. Market volatility returned as mixed to slightly negative economic data reintroduced doubts about the strength and sustainability of the economic recovery. Through midday Friday just under half of the companies within the S&P 500 (INDEXSP:.INX) have reported earnings; of these 69% have beaten EPS expectations while 64% have beaten revenue forecasts. The Trade: Energy is the only sector within the ...