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Merrimack Pharmaceuticals Inc (NASDAQ:MACK)

10.25
BATS BZX Real-Time Price
As of 9:39am ET
 +0.10 / +0.99%
Today’s Change
6.38
Today|||52-Week Range
13.84
-9.29%
Year-to-Date
Institutional investors purchased a net $5.8 million shares of MACK during the quarter ended June 2015, and now own 70.35% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Individual stakeholders8.69%
Mutual fund holders42.68%
Other institutional27.67%

Largest Quarterly Institutional
Transactions

Latest Institutional Activity

6/30/2015WESTFIELD CAPITAL MANAGEMENT CO....  Bought 2.0 Million shares of Merrimack Pharmaceuticals...
6/30/2015PETER B. CANNELL & CO., INC.  Bought 714.5 Thousand shares of Merrimack Pharmaceuticals...
6/30/2015THE VANGUARD GROUP, INC.  Bought 672.2 Thousand shares of Merrimack Pharmaceuticals...

Top 10 Owners of Merrimack Pharmaceuticals Inc

StockholderStakeShares
owned
Total value ($)Shares
bought / sold
Total
change
Fidelity Management & Research Co...14.94%16,437,350166,017,235-118,051-0.71%
The Vanguard Group, Inc.8.53%9,379,28794,730,799+672,233+7.72%
BlackRock Fund Advisors6.87%7,558,05676,336,366+157,024+2.12%
Westfield Capital Management Co. ...4.44%4,881,66749,304,837+1,978,108+68.13%
SSgA Funds Management, Inc.3.62%3,985,10940,249,601+519,679+15.00%
TIAA-CREF Investment Management L...2.82%3,103,32031,343,532+525,906+20.40%
Lagoda Investment Management LP1.91%2,100,14021,211,414+168,268+8.71%
Deutsche Asset & Wealth Managemen...1.65%1,812,43518,305,594+23,900+1.34%
Teachers Advisors, Inc.1.16%1,275,66712,884,237+151,131+13.44%
Northern Trust Investments, Inc.1.12%1,231,44512,437,595+112,697+10.07%

Top 10 Mutual Funds Holding Merrimack Pharmaceuticals Inc

Mutual fundStakeShares
owned
Total value ($)Shares
bought / sold
Total
change
Fidelity Growth Company Fund7.68%8,454,22185,387,63200.00%
SPDR S&P Biotech ETF2.29%2,515,92225,410,812+172,132+7.34%
Fidelity Series Growth Company Fu...2.21%2,427,60024,518,76000.00%
CREF Stock Account2.19%2,413,81524,379,532+9,877+0.41%
Vanguard Strategic Equity Fund1.73%1,899,40019,183,940+283,000+17.51%
Vanguard Small Cap Index Fund1.72%1,889,04319,079,334+13,940+0.74%
Vanguard Total Stock Market Index...1.56%1,719,43317,366,273+44,843+2.68%
iShares Russell 2000 ETF1.47%1,618,74516,349,325+21,417+1.34%
Fidelity Blue Chip Growth Fund1.44%1,584,15815,999,99600.00%
iShares Nasdaq Biotechnology ETF1.36%1,499,80515,148,031+5,780+0.39%