Pfizer Inc. (NYSE:PFE – Get Free Report) was down 0.4% during mid-day trading on Tuesday . The company traded as low as $28.40 and last traded at $28.43. Approximately 5,945,216 shares changed hands during mid-day trading, a decline of 86% from the average daily volume of 42,291,641 shares. The stock had previously closed at $28.53. […]