Merrimack Pharmaceuticals Inc (NASDAQ:MACK)

During the Trading Day
10.72 -0.05 / -0.46%
As of 3:59pm ET
Day’s Change
During After-Hours   Switch to standard view »
10.72 -0.0011 / -0.01%
Volume: 50.1K
Institutional investors purchased a net $4.0 million shares of MACK during the quarter ended September 2014, and now own 56.05% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Individual stakeholders8.37%
Mutual fund holders34.21%
Other institutional21.85%

Largest Quarterly Institutional

Latest Institutional Activity

12/31/2014LAGODA INVESTMENT MANAGEMENT LP  Bought 1.6 Million shares of Merrimack Pharmaceuticals...
12/31/2014BLACKROCK FUND ADVISORS  Bought 1.1 Million shares of Merrimack Pharmaceuticals...
12/31/2014THE VANGUARD GROUP, INC.  Bought 996.2 Thousand shares of Merrimack Pharmaceuticals...

Top 10 Owners of Merrimack Pharmaceuticals Inc

Total value ($)Shares
bought / sold
Fidelity Management & Research Co...14.94%15,816,320149,147,898+194,482+1.24%
The Vanguard Group, Inc.6.25%6,616,42962,392,925+996,243+17.73%
BlackRock Fund Advisors6.22%6,585,01462,096,682+1,117,095+20.43%
SSgA Funds Management, Inc.3.03%3,208,40630,255,269-463,744-12.63%
Deutsche Asset & Wealth Managemen...1.83%1,938,43718,279,461+49,100+2.60%
Millennium Management LLC1.70%1,797,84816,953,707-193,374-9.71%
Lagoda Investment Management LP1.47%1,560,53014,715,798+1,560,530--
Northern Trust Investments, Inc.1.02%1,085,48410,236,114-44,625-3.95%
UBS AG (Investment Management)0.81%857,1978,083,368+17,800+2.12%
Morgan Stanley Smith Barney LLC0.74%784,8957,401,560+88,884+12.77%

Top 10 Mutual Funds Holding Merrimack Pharmaceuticals Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity Growth Company Fund7.86%8,325,59178,510,323-1,219,600-12.78%
Fidelity Series Growth Company Fu...1.97%2,081,96619,632,939+33,600+1.64%
SPDR S&P Biotech ETF1.76%1,866,51217,601,208+277,729+17.48%
Vanguard Small Cap Index Fund1.57%1,666,67015,716,698+14,046+0.85%
iShares Russell 2000 ETF1.55%1,641,07415,475,328-46,705-2.77%
Vanguard Total Stock Market Index...1.54%1,633,11115,400,237+61,410+3.91%
Fidelity Blue Chip Growth Fund1.51%1,594,65815,037,62500.00%
iShares Nasdaq Biotechnology ETF1.19%1,262,65311,906,818+7,764+0.62%
Vanguard Small Cap Growth Index F...1.05%1,106,11410,430,655+11,934+1.09%
iShares US Pharmaceuticals ETF0.99%1,051,8209,918,663+40,437+4.00%

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