 Assenagon Asset Management S.A. purchased a new position in National Presto Industries Inc. NYSE:NPK in the 1st quarter, according to its most recent 13F filing with the Securities Exchange Commission. The institutional investor purchased 16,600 shares of the conglomerates stock, valued at approximately 1,175,000. Assenagon Asset Management S.A. owned approximately 0.24 of National Presto ... 