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Merrimack Pharmaceuticals Inc (NASDAQ:MACK)

6.31
Delayed Data
As of May 27
 -0.23 / -3.52%
Today’s Change
5.02
Today|||52-Week Range
13.00
-20.13%
Year-to-Date
Institutional investors purchased a net $4.2 million shares of MACK during the quarter ended March 2016, and now own 69.13% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Individual stakeholders7.68%
Mutual fund holders40.79%
Other institutional28.33%

Largest Quarterly Institutional
Transactions

Latest Institutional Activity

3/31/2016CONSONANCE CAPITAL MANAGEMENT LP  Bought 5.9 Million shares of Merrimack Pharmaceuticals...
3/31/2016WESTFIELD CAPITAL MANAGEMENT CO....  Bought 871.2 Thousand shares of Merrimack Pharmaceuticals...
3/31/2016RENAISSANCE TECHNOLOGIES LLC  Bought 636.6 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...13.82%17,342,785122,786,918+72,966+0.42%
The Vanguard Group, Inc.7.36%9,238,22765,406,647-1,075,018-10.42%
Westfield Capital Management Co. ...6.47%8,127,02257,539,316+871,207+12.01%
BlackRock Fund Advisors6.47%8,125,48357,528,420-40,321-0.49%
Consonance Capital Management LP4.68%5,875,17141,596,211+5,875,171--
TIAA-CREF Investment Management L...4.35%5,465,49638,695,712+377,007+7.41%
SSgA Funds Management, Inc.2.37%2,968,88821,019,727-462,180-13.47%
Putnam Investment Management LLC2.13%2,670,97118,910,475+451,045+20.32%
Teachers Advisors, Inc.2.02%2,530,18817,913,731-134,763-5.06%
Lagoda Investment Management LP1.85%2,327,59916,479,401+115,719+5.23%

Top 10 Mutual Funds Holding Merrimack Pharmaceuticals Inc

Mutual fundStakeShares
owned
Total value ($)Shares
bought / sold
Total
change
Fidelity Growth Company Fund6.39%8,026,12156,824,937+22,500+0.28%
CREF Stock Account3.68%4,618,66732,700,162+47,500+1.04%
Fidelity Series Growth Company Fu...1.97%2,473,10017,509,548+10,600+0.43%
Vanguard Small Cap Index Fund1.71%2,141,25415,160,078+26,522+1.25%
Vanguard Total Stock Market Index...1.60%2,007,89614,215,904+12,330+0.62%
iShares Russell 2000 ETF1.44%1,812,73112,834,135+27,255+1.53%
Putnam Voyager Fund1.25%1,569,26811,110,417+365,200+30.33%
Fidelity Blue Chip Growth Fund1.25%1,569,52511,112,23700.00%
iShares Nasdaq Biotechnology ETF1.18%1,479,89510,477,657-18,540-1.24%
Vanguard Small Cap Growth Index F...1.02%1,275,8819,033,237-2,538-0.20%