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Merrimack Pharmaceuticals (MACK) Institutional Ownership

Merrimack Pharmaceuticals logo
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Institutional Ownership Changes (13F Filings) for Merrimack Pharmaceuticals (NASDAQ:MACK)

Current
Institutional Ownership
Percentage
63.97%
Number of
Institutional Buyers
(last 12 months)
11
Total
Institutional Inflows
(last 12 months)
$9.34M
Number of
Institutional Sellers
(last 12 months)
2
Total
Institutional Outflows
(last 12 months)
$1.36M
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MACK Institutional Buying and Selling by Quarter

Merrimack Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/14/2024Marshall Wace LLP38,221$578K0.0%N/A0.258%
8/9/2024Dimensional Fund Advisors LP318,995$4.83M0.0%-19.9%2.157%
8/8/2024JBF Capital Inc.39,637$600K0.1%N/A0.268%
8/1/2024Rhumbline Advisers2,480$38K0.0%-81.7%0.017%
5/15/2024Aristides Capital LLC10,000$148K0.1%N/A0.069%
5/10/2024Vanguard Group Inc.620,847$9.17M0.0%+2.0%4.272%
5/1/2024BNP Paribas Financial Markets5,077$75K0.0%+67.3%0.035%
2/14/2024ADAR1 Capital Management LLC549,418$7.37M2.6%N/A3.837%
1/30/2024Strs Ohio3,300$44K0.0%N/A0.023%
1/25/2024 Allspring Global Investments Holdings LLC11,827$159K0.0%N/A0.083%
11/15/2023Kennedy Capital Management LLC93,708$1.16M0.0%+2.4%0.654%
11/14/2023Wittenberg Investment Management Inc.209,739$2.59M0.9%+2.3%1.465%
11/8/2023Sepio Capital LP306,680$3.78M0.3%+4.1%2.142%
8/11/2023Wittenberg Investment Management Inc.204,994$2.52M0.9%+3.5%1.432%
8/4/2023American International Group Inc.5,039$62K0.0%N/A0.035%
8/3/2023Fifth Lane Capital LP10,929$134K0.0%N/A0.077%
5/15/2023Wittenberg Investment Management Inc.197,994$2.43M0.9%+3.6%1.388%
5/15/2023Madison Avenue Partners LP553,085$6.80M1.5%N/A3.879%
5/15/2023Sio Capital Management LLC272,843$3.35M1.7%+9.1%1.913%
5/12/2023Yakira Capital Management Inc.72,118$886K0.2%-15.9%0.506%
2/15/2023Nantahala Capital Management LLC210,000$2.41M0.2%-51.1%1.566%
2/10/202322NW LP1,015,048$11.63M6.3%-17.5%7.569%
2/10/2023Yakira Capital Management Inc.85,732$982K0.2%-26.0%0.639%
2/6/2023Wittenberg Investment Management Inc.191,194$2.19M0.9%+1.3%1.426%
11/14/2022Point72 Asset Management L.P.1,100,994$4.13M0.0%+228.5%8.210%
11/10/2022Nantahala Capital Management LLC429,596$1.61M0.1%-12.6%3.204%
10/28/2022Sepio Capital LP294,545$1.11M0.1%-6.9%2.196%
8/16/2022Western Standard LLC1,269,558$7.55M5.7%+8.3%9.467%
8/15/2022Nantahala Capital Management LLC491,509$2.92M0.1%-4.9%3.665%
8/11/2022Yakira Capital Management Inc.115,821$689K0.1%+30.6%0.864%
7/26/2022Sepio Capital LP316,313$1.88M0.2%+6.7%2.359%
5/13/2022Bronte Capital Management Pty Ltd.578,313$3.66M0.3%+7.6%4.313%
5/12/2022Yakira Capital Management Inc.88,683$561K0.1%+20.7%0.661%
5/9/2022Sepio Capital LP296,546$1.88M0.2%+276.2%2.211%
2/16/2022Western Standard LLC1,172,463$4.58M2.7%-7.6%8.743%
2/10/2022Bronte Capital Management Pty Ltd.537,584$2.10M0.1%-2.1%4.009%
2/9/2022Dimensional Fund Advisors LP488,687$1.91M0.0%-2.1%3.644%
2/9/2022Yakira Capital Management Inc.73,450$287K0.0%+21.1%0.548%
1/20/2022 Radnor Capital Management LLC13,332$52K0.0%N/A0.099%
11/15/2021Point72 Asset Management L.P.341,685$1.65M0.0%+63.0%2.548%
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11/15/2021Dimensional Fund Advisors LP499,368$2.41M0.0%-3.5%3.724%
11/9/2021BlackRock Inc.211,051$1.02M0.0%+12.8%1.574%
11/3/2021Sepio Capital LP78,829$381K0.0%-64.4%0.588%
8/25/2021Marshall Wace LLP39,150$250K0.0%-57.3%0.292%
8/17/2021Bridgeway Capital Management LLC59,200$378K0.0%-7.8%0.441%
8/16/2021Point72 Asset Management L.P.209,563$1.34M0.0%N/A1.563%
8/16/2021Nantahala Capital Management LLC571,946$3.66M0.1%-6.1%4.265%
8/16/2021State Street Corp46,556$297K0.0%+316.2%0.347%
8/16/2021Western Standard LLC1,269,558$8.11M4.8%+25.5%9.467%
8/16/2021Marshall Wace LLP39,150$250K0.0%-57.3%0.292%
8/13/2021Renaissance Technologies LLC101,970$652K0.0%-45.8%0.760%
8/13/2021Northern Trust Corp31,678$203K0.0%-12.5%0.236%
8/13/2021Geode Capital Management LLC96,692$617K0.0%+6.0%0.721%
8/12/2021Wittenberg Investment Management Inc.189,294$1.21M0.5%+1.7%1.412%
5/18/2021Millennium Management LLC12,292$77K0.0%N/A0.092%
5/17/2021Price T Rowe Associates Inc. MD10,500$66K0.0%N/A0.078%
5/14/2021Nantahala Capital Management LLC608,974$3.82M0.1%-19.0%4.541%
5/14/2021Dimensional Fund Advisors LP519,220$3.26M0.0%-5.7%3.872%
5/13/2021Renaissance Technologies LLC188,161$1.18M0.0%+6.4%1.403%
5/13/2021Bank of New York Mellon Corp42,225$265K0.0%+140.7%0.315%
5/12/2021Geode Capital Management LLC91,208$572K0.0%+9.3%0.680%
5/10/2021Sepio Capital LP218,907$1.38M0.1%+13.1%1.632%
5/7/2021BlackRock Inc.255,503$1.61M0.0%+1.4%1.905%
4/26/2021Mascoma Wealth Management LLC5,000$31K0.0%N/A0.037%
4/13/2021Bronte Capital Management Pty Ltd.550,679$3.46M0.4%+3.6%4.106%
3/8/2021Dimensional Fund Advisors LP550,539$3.79M0.0%-2.9%4.115%
2/25/2021Dimensional Fund Advisors LP550,539$3.79M0.0%-2.9%4.115%
2/10/2021Renaissance Technologies LLC176,861$1.22M0.0%N/A1.322%
12/16/2020Bronte Capital Management Pty Ltd.531,510$2.05M0.4%N/A3.972%
11/17/2020Nantahala Capital Management LLC751,943$3.01M0.1%+0.6%5.620%
11/12/2020Bronte Capital Management Pty Ltd.531,510$2.05M0.4%N/A3.972%
(Data available from 1/1/2016 forward)

MACK Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of MACK shares?

During the previous two years, 21 institutional investors and hedge funds held shares of Merrimack Pharmaceuticals. The most heavily invested institutionals were 22NW LP ($11.63M), Vanguard Group Inc. ($9.17M), ADAR1 Capital Management LLC ($7.37M), Madison Avenue Partners LP ($6.80M), Dimensional Fund Advisors LP ($4.83M), Point72 Asset Management L.P. ($4.13M), and Sepio Capital LP ($3.78M).Learn more on MACK's institutional investors.

What percentage of Merrimack Pharmaceuticals stock is owned by institutional investors?

63.97% of Merrimack Pharmaceuticals stock is owned by institutional investors. Learn more on MACK's institutional investor holdings.

Which institutional investors have been buying Merrimack Pharmaceuticals stock?

Of the 16 institutional investors that purchased Merrimack Pharmaceuticals stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Point72 Asset Management L.P. ($765.89K), Madison Avenue Partners LP ($553.09K), ADAR1 Capital Management LLC ($549.42K), JBF Capital Inc. ($39.64K), Marshall Wace LLP ($38.22K), Sio Capital Management LLC ($22.84K), and Wittenberg Investment Management Inc. ($21.05K).

How much institutional buying is happening at Merrimack Pharmaceuticals?

Institutional investors have bought a total of 2,059,503 shares in the last 24 months. This purchase volume represents approximately $19.68M in transactions.

Which Merrimack Pharmaceuticals major shareholders have been selling company stock?

The following institutional investors have sold Merrimack Pharmaceuticals stock in the last 24 months: Nantahala Capital Management LLC ($281.51K), 22NW LP ($215.97K), Dimensional Fund Advisors LP ($79.01K), Yakira Capital Management Inc. ($43.70K), and Rhumbline Advisers ($11.04K).

How much institutional selling is happening at Merrimack Pharmaceuticals?

Institutional investors have sold a total of 631,223 shares in the last 24 months. This volume of shares sold represents approximately $7.10M in transactions.


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This page (NASDAQ:MACK) was last updated on 11/2/2024 by MarketBeat.com Staff
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