 Shares of National Presto Industries Inc. NYSE:NPK rose 9 on Tuesday . The company traded as high as 79.33 and last traded at 78.52, approximately 101,271 shares changed hands during mid-day trading. An increase of 82 from the average daily volume of 55,532 shares. The stock had previously closed at 72.02. Separately, ValuEngine downgraded National ... 