 iShares SP GSCI Commodity Indexed Trust NYSEARCA:GSG reached a new 52-week low during mid-day trading on Friday . The stock traded as low as 12.93 and last traded at 12.97, with a volume of 9628 shares. The stock had previously closed at 13.50. The companys 50 day moving average price is 14.56 and its 200-day ... 