 Rhumbline Advisers grew its position in shares of Ducommun Incorporated NYSE:DCO by 9.2 during the 1st quarter, according to its most recent 13F filing with the Securities and Exchange Commission. The fund owned 18,350 shares of the aerospace companys stock after purchasing an additional 1,541 shares during the quarter. Rhumbline Advisers owned approximately 0.16 of ... 