Katsche, according to the 6/2011 filings oppenheimer increased 461k shares while Wellington decreased 1.4 mil shares. OPPENHEIMER FUNDS IN... 6/30/2011 5,502,266 461,542 WELLINGTON MANAGEMEN... 6/30/2011 2,151,950 (1,468,378) http://www.nasdaq.com/asp/holdings.asp?symbol=MNTA&selected=MNTA