MACK

Merrimack Pharmaceuticals, Inc. Institutional Ownership

$7.01
*  
0.34
5.1%
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*Delayed - data as of May 24, 2016 12:01 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 66.94%
Total Shares Outstanding (millions) 128
Total Value of Holdings (millions) $570

Active Positions

Holders Shares
Increased Positions 73 10,812,937
Decreased Positions 53 6,278,691
Held Positions 32 68,410,582
Total Institutional Shares 158 85,502,210

New and Sold Out Positions


Holders Shares
New Positions 21 7,947,830
Sold Out Positions 18 2,207,341

158 Institutional Holders
85,502,210 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)
JANE STREET GROUP, LLC 03/31/2016 44,820 34,046 316.00 299
BLACKROCK GROUP LTD 03/31/2016 44,007 13,542 44.45 294
BIRCHVIEW CAPITAL, LP 03/31/2016 44,000 14,000 46.67 293
PNC FINANCIAL SERVICES GROUP, INC. 03/31/2016 36,725 22 .06 245
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 03/31/2016 35,932 0 0.00 240
COMMONWEALTH EQUITY SERVICES, INC 03/31/2016 35,881 665 1.89 239
PRICE T ROWE ASSOCIATES INC /MD/ 03/31/2016 31,800 0 0.00 212
VIRTUS ETF ADVISERS LLC 03/31/2016 31,577 (1,993) (5.94) 211
MANCHESTER CAPITAL MANAGEMENT LLC 03/31/2016 30,000 0 0.00 200
KCG HOLDINGS, INC. 03/31/2016 29,296 29,296 New 195
LEGAL & GENERAL GROUP PLC 03/31/2016 26,766 7,732 40.62 179
WMS PARTNERS, LLC 03/31/2016 25,600 0 0.00 171
HORIZON KINETICS LLC 03/31/2016 25,000 0 0.00 167
SQUAREPOINT OPS LLC 03/31/2016 24,800 (36,800) (59.74) 165
SEI INVESTMENTS CO 03/31/2016 24,690 7,360 42.47 165

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