T Rowe Price has increased its MNTA holding by 34% (from 3,338,081 shares to 4,469,373 shares), as reported in an SEC Form 13G/A filing on 11/10/09: <a href="http://sec.gov/Archives/edgar/data/80255/000008025509000580/mnta13gaoct09.txt" rel="nofollow" target="_blank">http://sec.gov/Archives/edgar/data/80255/000008025509000580/mnta13gaoct09.txt</a> T Rowe Price is now MNTA’s second largest shareholder, trailing only Novartis.