MACK

Merrimack Pharmaceuticals, Inc. Institutional Ownership

$5.425
*  
0.135
2.55%
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*Delayed - data as of Jun. 28, 2016 11:30 ET  -  Find a broker to begin trading MACK now
Exchange: NASDAQ
Industry: Health Care
Community Rating:
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Ownership Summary Institutional Holdings Insiders
(SEC Form 4)
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Ownership Summary as reported in the most recent 13F filings


Institutional Ownership 66.95%
Total Shares Outstanding (millions) 128
Total Value of Holdings (millions) $452

Active Positions

Holders Shares
Increased Positions 74 10,825,517
Decreased Positions 54 6,280,042
Held Positions 32 68,406,651
Total Institutional Shares 160 85,512,210

New and Sold Out Positions


Holders Shares
New Positions 22 7,957,830
Sold Out Positions 19 2,208,692

128 Activity Institutional Holders
17,105,559 Activity Total Shares Held


Click on the column header links to resort ascending (▲) or descending (▼).
Owner Name Date Shared Held Change (Shares) Change (%) Value (in 1,000s)
FMR LLC 03/31/2016 17,409,085 72,966 .42 92,094
VANGUARD GROUP INC 03/31/2016 9,238,227 (1,075,018) (10.42) 48,870
WESTFIELD CAPITAL MANAGEMENT CO LP 03/31/2016 8,127,022 871,207 12.01 42,992
CONSONANCE CAPITAL MANAGEMENT LP 03/31/2016 5,875,171 5,875,171 New 31,080
TIAA CREF INVESTMENT MANAGEMENT LLC 03/31/2016 5,465,496 377,007 7.41 28,912
BLACKROCK FUND ADVISORS 03/31/2016 5,283,448 21,746 .41 27,949
STATE STREET CORP 03/31/2016 2,968,888 (462,180) (13.47) 15,705
BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A. 03/31/2016 2,842,035 (62,067) (2.14) 15,034
PUTNAM INVESTMENTS LLC 03/31/2016 2,670,971 451,045 20.32 14,129
TEACHERS ADVISORS INC 03/31/2016 2,530,188 (134,763) (5.06) 13,385
LAGODA INVESTMENT MANAGEMENT, L.P. 03/31/2016 2,327,599 115,719 5.23 12,313
DEUTSCHE BANK AG\ 03/31/2016 1,819,617 64,911 3.70 9,626
NORTHERN TRUST CORP 03/31/2016 1,339,012 30,370 2.32 7,083
UBS ASSET MANAGEMENT AMERICAS INC 03/31/2016 1,308,762 43,963 3.48 6,923
CANNELL PETER B & CO INC 03/31/2016 1,176,978 125,800 11.97 6,226

Institutional Holdings information for this company is filed by major institutions on form 13-F with the Securities and Exchange Commission.
info  Learn more about Institutional Holdings