Pfizer Inc. (NYSE:PFE – Get Free Report) shares traded down 2.7% during trading on Wednesday . The stock traded as low as $23.93 and last traded at $24.05. Approximately 75,014,186 shares were traded during mid-day trading, an increase of 78% from the average daily volume of 42,113,230 shares. The stock had previously closed at $24.72. [...]