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BATS BZX Real-Time Price
As of 2:05pm ET
 -0.28 / -0.79%
Today’s Change
Today|||52-Week Range
Institutional investors purchased a net $155.8 thousand shares of MDCO during the quarter ended June 2017 and now own 128.87% of the total shares outstanding. This majority interest is a greater percentage than is typical for companies in the Pharmaceuticals: Other industry and highlights that the smart money sees this stock as an important holding.
Other institutional64.82%
Mutual fund holders64.06%
Individual stakeholders14.81%

Largest Quarterly Institutional

Latest Institutional Activity

6/30/2017WESTFIELD CAPITAL MANAGEMENT CO....  Bought 1.8 Million shares of Medicines Co
6/30/2017PUTNAM INVESTMENT MANAGEMENT LLC  Bought 839.6 Thousand shares of Medicines Co
6/30/2017IRIDIAN ASSET MANAGEMENT LLC  Bought 655.1 Thousand shares of Medicines Co

Top 10 Owners of Medicines Co

Total value ($)Shares
bought / sold
Fidelity Management & Research Co...14.61%10,545,238405,464,401+103,282+0.99%
Wellington Management Co. LLP13.99%10,096,752388,220,114+114,891+1.15%
BlackRock Fund Advisors12.87%9,285,395357,023,438+152,724+1.67%
The Vanguard Group, Inc.8.44%6,088,386234,098,442-2,344-0.04%
Tavistock Life Sciences Co. (Inve...6.51%4,696,599180,584,232-352,300-6.98%
Iridian Asset Management LLC5.10%3,677,746141,409,334+655,065+21.67%
Corvex Management LP4.08%2,944,060113,199,107-308,200-9.48%
Bridger Management LLC3.41%2,461,24094,634,678+642,752+35.35%
SSgA Funds Management, Inc.3.08%2,220,19985,366,652+183,086+8.99%
Westfield Capital Management Co. ...2.82%2,031,35978,105,754+1,837,359+947.09%

Top 10 Mutual Funds Holding Medicines Co

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Vanguard Health Care Fund7.71%5,564,220213,944,259+5,564,220--
iShares Core S&P Small Cap ETF4.33%3,125,793120,186,741-706-0.02%
Fidelity Growth Company Fund3.38%2,438,30093,752,635+51,082+2.14%
Vanguard Total Stock Market Index...2.14%1,541,76459,280,826+11,296+0.74%
Vanguard Small Cap Index Fund2.08%1,502,97657,789,427+3,801+0.25%
Fidelity Select Biotechnology Por...2.01%1,451,60855,814,328-255,900-14.99%
iShares Russell 2000 ETF1.79%1,292,12649,682,245+25,790+2.04%
iShares Nasdaq Biotechnology ETF1.40%1,011,11038,877,180-5,097-0.50%
First Eagle Fund of America1.37%990,89938,100,067-31,650-3.10%
Vanguard Extended Market Index Fu...1.27%914,41035,159,065+14,502+1.61%