Merrimack Pharmaceuticals Inc (NASDAQ:MACK)

Monday’s Trading Day
11.87 +0.26 / +2.24%
As of Mar 30
Day’s Change
Tuesday’s Pre-Market   Switch to standard view »
11.85 -0.02 / -0.17%
Volume: 255.00
Institutional investors purchased a net $3.9 million shares of MACK during the quarter ended December 2014, and now own 56.00% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Individual stakeholders8.71%
Mutual fund holders36.16%
Other institutional19.84%

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%15,816,320169,550,950+194,482+1.24%
The Vanguard Group, Inc.6.25%6,616,42970,928,119+996,243+17.73%
BlackRock Fund Advisors6.22%6,585,01470,591,350+1,117,095+20.43%
SSgA Funds Management, Inc.3.03%3,208,40634,394,112-463,744-12.63%
Deutsche Asset & Wealth Managemen...1.83%1,938,43720,780,045+49,100+2.60%
Millennium Management LLC1.70%1,797,84819,272,931-193,374-9.71%
Lagoda Investment Management LP1.47%1,560,53016,728,882+1,560,530--
Northern Trust Investments, Inc.1.02%1,085,48411,636,388-44,625-3.95%
UBS AG (Investment Management)0.81%857,1979,189,152+17,800+2.12%
Morgan Stanley Smith Barney LLC0.74%784,8958,414,074+88,884+12.77%

Top 10 Mutual Funds Holding Merrimack Pharmaceuticals Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity Growth Company Fund7.85%8,308,89189,071,312-16,700-0.20%
Fidelity Series Growth Company Fu...2.29%2,427,60026,023,872+345,634+16.60%
SPDR S&P Biotech ETF1.89%2,000,63421,446,796+134,122+7.19%
Vanguard Small Cap Index Fund1.63%1,730,02318,545,847+36,193+2.14%
Vanguard Total Stock Market Index...1.56%1,649,85417,686,435+16,743+1.03%
Fidelity Blue Chip Growth Fund1.51%1,594,65817,094,73400.00%
iShares Russell 2000 ETF1.47%1,552,23016,639,906-88,844-5.41%
iShares Nasdaq Biotechnology ETF1.25%1,321,76314,169,299+59,110+4.68%
CREF Stock Account1.11%1,179,62412,645,569+816,604+224.95%
iShares US Pharmaceuticals ETF1.07%1,134,75312,164,552+82,933+7.88%

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