What is Erx ETF? ERX is an exchange-traded fund that focuses on energy stocks. It was launched in 2006 and is managed by State Street Global Advisors. The fund has $152 million in assets and charges a 0.45% annual fee. The top five holdings are Exxon Mobil (XOM), Chevron (CVX), Schlumberger (SLB), Halliburton (HAL), and […]