 Alliancebernstein L.P. trimmed its holdings in shares of National Presto Industries Inc. NYSE:NPK by 74.6 in the fourth quarter, according to the company in its most recent filing with the Securities and Exchange Commission. The firm owned 5,850 shares of the conglomerates stock after selling 17,178 shares during the period. Alliancebernstein L.P. owned 0.08 of ... 