Merrimack Pharmaceuticals Inc (NASDAQ:MACK)

Data as of Apr 17
 +0.02 / +0.44%
Today’s Change
Today|||52-Week Range
Institutional investors purchased a net $1.5 million shares of MACK during the quarter ended December 2013, and now own 49.82% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Other institutional7.99%
Individual stakeholders7.78%
Mutual fund holders41.83%

Largest Quarterly Institutional

Latest Institutional Activity

2/28/2014STATE STREET GLOBAL ADVISORS LTD...  Sold 2.6 Thousand shares of Merrimack Pharmaceuticals...

Top 10 Owners of Merrimack Pharmaceuticals Inc

Total value ($)Shares
bought / sold
Fidelity Management & Research Co...14.82%15,265,42876,937,757-294,604-1.89%
Jennison Associates LLC6.34%6,536,65632,944,746+1,085,282+19.91%
The Vanguard Group, Inc.4.83%4,979,70525,097,713+283,232+6.03%
BlackRock Fund Advisors4.60%4,736,21423,870,519-105,738-2.18%
SSgA Funds Management, Inc.1.42%1,458,4777,350,724+191,200+15.09%
Northern Trust Investments, Inc.1.34%1,376,4826,937,469+36,840+2.75%
Magnetar Financial LLC1.19%1,226,8936,183,541-427,944-25.86%
Balyasny Asset Management LP1.05%1,076,9715,427,934+1,076,971--
Morgan Stanley Smith Barney LLC (...0.96%990,1104,990,154+955,564+2,766.06%
The Bank of New York Mellon Corp....0.88%902,2534,547,355+25,113+2.86%

Top 10 Mutual Funds Holding Merrimack Pharmaceuticals Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity Growth Company Fund9.28%9,565,12148,208,21000.00%
Fidelity Series Growth Company Fu...8.43%8,689,92143,797,202+8,689,921--
Prudential Jennison Health Scienc...3.69%3,798,56219,144,75200.00%
SPDR S&P Biotech ETF3.02%3,108,71515,667,924+3,108,715--
iShares Russell 2000 ETF1.60%1,652,0108,326,130+99,415+6.40%
Fidelity Blue Chip Growth Fund1.55%1,594,6588,037,07600.00%
Vanguard Small Cap Index Fund1.50%1,548,7837,805,866+1,910+0.12%
Vanguard Total Stock Market Index...1.35%1,390,2757,006,98600.00%
iShares Nasdaq Biotechnology ETF1.18%1,217,8766,138,095-105,803-7.99%
Vanguard Small Cap Growth Index F...1.14%1,175,7365,925,709+3,734+0.32%

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