September 23, 2015: Here are four stocks trading with heavy volume among 312 equities making new 52-week lows today. Petroleo Brasileiro SA (PBR) dropped about 5% on Wednesday to post a new 52-week low at $3.89 after closing at $4.10 on Tuesday. The stock’s 52-week high is $17.64. Share volume was about 10% above the daily average of around 32.6 million. The Brazilian oil giant had no specific news today, but a drop in crude oil prices following weak manufacturing data from China did nothing... More