MACK

Merrimack Pharmaceuticals, Inc. Institutional Ownership

$10.44
*  
0.16
1.56%
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*Delayed - data as of Aug. 4, 2015  -  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


Institutional Ownership 62.91%
Total Shares Outstanding (millions) 110
Total Value of Holdings (millions) $712

Active Positions

Holders Shares
Increased Positions 81 14,844,710
Decreased Positions 60 4,110,341
Held Positions 29 50,266,330
Total Institutional Shares 170 69,221,381

New and Sold Out Positions


Holders Shares
New Positions 29 5,589,077
Sold Out Positions 15 1,496,639

141 Activity Institutional Holders
18,955,051 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 03/31/2015 16,139,452 256,832 1.62 165,914
VANGUARD GROUP INC 03/31/2015 8,707,054 2,090,625 31.60 89,509
BLACKROCK FUND ADVISORS 03/31/2015 4,981,073 235,406 4.96 51,205
STATE STREET CORP 03/31/2015 3,465,430 257,024 8.01 35,625
WESTFIELD CAPITAL MANAGEMENT CO LP 03/31/2015 2,903,559 2,903,559 New 29,849
TIAA CREF INVESTMENT MANAGEMENT LLC 03/31/2015 2,577,414 2,140,644 490.11 26,496
BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A. 03/31/2015 2,419,959 580,612 31.57 24,877
LAGODA INVESTMENT MANAGEMENT, L.P. 03/31/2015 1,931,872 371,342 23.80 19,860
DEUTSCHE BANK AG\ 03/31/2015 1,788,554 (150,030) (7.74) 18,386
TEACHERS ADVISORS INC 03/31/2015 1,124,536 985,445 708.49 11,560
NORTHERN TRUST CORP 03/31/2015 1,118,748 33,264 3.06 11,501
CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. 03/31/2015 1,052,700 313,100 42.33 10,822
BALYASNY ASSET MANAGEMENT LLC 03/31/2015 1,010,126 1,010,126 New 10,384
CITY NATIONAL BANK 06/30/2015 950,004 (37,942) (3.84) 9,766
MILLENNIUM MANAGEMENT LLC 03/31/2015 892,508 (905,340) (50.36) 9,175

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