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S&P 500   4,594.63
DOW   36,245.50
QQQ   389.94
Man kills 4 relatives in Queens knife rampage, injures 2 officers before he's fatally shot by police
Trading Experts Call It “The Perfect Tesla Trade” (Ad)
British military reports an explosion off the coast of Yemen in the key Bab el-Mandeb Strait
Chinese developer Evergrande risking liquidation if creditors veto its plan for handling huge debts
Trading Experts Call It “The Perfect Tesla Trade” (Ad)
Lacking counselors, US schools turn to the booming business of online therapy
Kiss say farewell to live touring, become first US band to go virtual and become digital avatars
New CBOE “special perk” helps traders target income every weekend (Ad)
S&P 500   4,594.63
DOW   36,245.50
QQQ   389.94
Man kills 4 relatives in Queens knife rampage, injures 2 officers before he's fatally shot by police
Trading Experts Call It “The Perfect Tesla Trade” (Ad)
British military reports an explosion off the coast of Yemen in the key Bab el-Mandeb Strait
Chinese developer Evergrande risking liquidation if creditors veto its plan for handling huge debts
Trading Experts Call It “The Perfect Tesla Trade” (Ad)
Lacking counselors, US schools turn to the booming business of online therapy
Kiss say farewell to live touring, become first US band to go virtual and become digital avatars
New CBOE “special perk” helps traders target income every weekend (Ad)
S&P 500   4,594.63
DOW   36,245.50
QQQ   389.94
Man kills 4 relatives in Queens knife rampage, injures 2 officers before he's fatally shot by police
Trading Experts Call It “The Perfect Tesla Trade” (Ad)
British military reports an explosion off the coast of Yemen in the key Bab el-Mandeb Strait
Chinese developer Evergrande risking liquidation if creditors veto its plan for handling huge debts
Trading Experts Call It “The Perfect Tesla Trade” (Ad)
Lacking counselors, US schools turn to the booming business of online therapy
Kiss say farewell to live touring, become first US band to go virtual and become digital avatars
New CBOE “special perk” helps traders target income every weekend (Ad)

Merrimack Pharmaceuticals (MACK) Institutional Ownership

$12.90
+0.28 (+2.22%)
(As of 12/1/2023 ET)
Compare
Today's Range
$12.56
▼
$12.91
50-Day Range
$12.02
▼
$12.90
52-Week Range
$10.10
▼
$13.15
Volume
40,215 shs
Average Volume
40,381 shs
Market Capitalization
$184.73 million
P/E Ratio
N/A
Dividend Yield
N/A
Price Target
N/A
Stock AnalysisChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSocial Media

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

Current
Institutional Ownership
Percentage
55.90%
Number of
Institutional Buyers
(last 12 months)
31
Total
Institutional Inflows
(last 12 months)
$26.73 M
Number of
Institutional Sellers
(last 12 months)
10
Total
Institutional Outflows
(last 12 months)
$7.01 M
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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
11/15/2023Kennedy Capital Management LLC93,708$1.16M0.0%+2.4%0.654%
11/14/2023California State Teachers Retirement System2,310$28K0.0%-33.7%0.016%
11/14/2023Wittenberg Investment Management Inc.209,739$2.59M0.9%+2.3%1.465%
11/13/2023FMR LLC9,326$0.12M0.0%+2,675.6%0.065%
11/9/2023Rhumbline Advisers13,879$0.17M0.0%+10.4%0.097%
11/8/2023Sepio Capital LP306,680$3.78M0.3%+4.1%2.142%
8/21/2023California State Teachers Retirement System3,483$43K0.0%N/A0.024%
8/15/2023Wells Fargo & Company MN4,446$55K0.0%+2,515.3%0.031%
8/15/2023Goldman Sachs Group Inc.14,142$0.17M0.0%-59.5%0.099%
8/15/2023Lazard Asset Management LLC3,123$38K0.0%-36.9%0.022%
8/15/2023Kennedy Capital Management LLC91,506$1.13M0.0%+565.1%0.639%
8/15/2023Boothbay Fund Management LLC46,437$0.57M0.0%-60.5%0.324%
8/14/2023Tower Research Capital LLC TRC 10,567$0.13M0.0%+755.6%0.074%
8/14/2023Marshall Wace LLP87,037$1.07M0.0%-11.4%0.608%
8/14/2023State Street Corp174,105$2.14M0.0%+244.4%1.216%
8/14/2023Nuveen Asset Management LLC13,719$0.17M0.0%N/A0.096%
8/11/2023BlackRock Inc.676,290$8.32M0.0%+204.3%4.723%
8/11/2023Geode Capital Management LLC243,802$3M0.0%+87.3%1.703%
8/11/2023JPMorgan Chase & Co.8,344$0.10M0.0%N/A0.058%
8/11/2023Wittenberg Investment Management Inc.204,994$2.52M0.9%+3.5%1.432%
8/11/2023Northern Trust Corp115,992$1.43M0.0%+315.0%0.810%
8/10/2023MetLife Investment Management LLC5,610$69K0.0%N/A0.039%
8/10/2023Charles Schwab Investment Management Inc.29,628$0.36M0.0%N/A0.207%
8/10/2023Citigroup Inc.3,117$38K0.0%N/A0.022%
8/9/2023Dimensional Fund Advisors LP459,960$5.66M0.0%-1.3%3.212%
8/9/2023BNP Paribas Arbitrage SNC2,726$34K0.0%N/A0.019%
8/4/2023American International Group Inc.5,039$62K0.0%N/A0.035%
8/3/2023Fifth Lane Capital LP10,929$0.13M0.0%N/A0.077%
8/3/2023Bank of New York Mellon Corp100,317$1.23M0.0%+34.0%0.703%
5/16/2023Jane Street Group LLC37,307$0.46M0.0%N/A0.262%
5/16/2023State Street Corp50,556$0.62M0.0%+3.5%0.355%
5/16/2023Geode Capital Management LLC130,164$1.60M0.0%-3.0%0.913%
5/15/2023Wittenberg Investment Management Inc.197,994$2.43M0.9%+3.6%1.388%
5/15/2023Boothbay Fund Management LLC117,436$1.44M0.0%+82.9%0.824%
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%
5/12/2023BlackRock Inc.222,253$2.73M0.0%+6.0%1.559%
5/12/2023UBS Group AG3,128$38K0.0%+303.6%0.022%
5/12/2023Yakira Capital Management Inc.72,118$0.89M0.2%-15.9%0.506%
5/12/2023Dimensional Fund Advisors LP466,140$5.73M0.0%-1.1%3.269%
5/4/2023Barclays PLC5,438$67K0.0%+3,928.1%0.038%
2/15/2023Western Standard LLC1,529,494$17.53M15.4%+30.5%11.406%
2/15/2023Millennium Management LLC16,985$0.20M0.0%N/A0.127%
2/15/2023Morgan Stanley9,163$0.11M0.0%+40.7%0.068%
2/15/2023Boothbay Fund Management LLC64,211$0.74M0.0%N/A0.479%
2/15/2023Nantahala Capital Management LLC210,000$2.41M0.2%-51.1%1.566%
2/14/2023Two Sigma Investments LP42,490$0.49M0.0%+97.5%0.317%
2/13/2023Geode Capital Management LLC134,226$1.54M0.0%+33.2%1.001%
2/10/202322NW LP1,015,048$11.63M6.3%-17.5%7.569%
2/10/2023Yakira Capital Management Inc.85,732$0.98M0.2%-26.0%0.639%
2/9/2023Dimensional Fund Advisors LP471,373$5.40M0.0%-0.2%3.515%
2/6/2023Wittenberg Investment Management Inc.191,194$2.19M0.9%+1.3%1.426%
11/15/2022Two Sigma Investments LP21,519$81K0.0%-13.6%0.160%
11/15/2022BlackRock Inc.206,783$0.78M0.0%-0.4%1.542%
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%
11/10/2022Dimensional Fund Advisors LP472,301$1.77M0.0%-0.9%3.522%
10/28/2022Sepio Capital LP294,545$1.11M0.1%-6.9%2.196%
8/18/2022Goldman Sachs Group Inc.14,142$84K0.0%N/A0.105%
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%
8/15/2022Point72 Asset Management L.P.335,108$1.99M0.0%-1.9%2.499%
8/11/2022Yakira Capital Management Inc.115,821$0.69M0.1%+30.6%0.864%
7/26/2022Sepio Capital LP316,313$1.88M0.2%+6.7%2.359%
5/13/2022Nantahala Capital Management LLC516,817$3.27M0.1%-9.3%3.854%
5/13/2022Vanguard Group Inc.608,204$3.85M0.0%-1.4%4.535%
5/13/2022Bronte Capital Management Pty Ltd.578,313$3.66M0.3%+7.6%4.313%
5/13/2022Dimensional Fund Advisors LP482,484$3.05M0.0%-1.3%3.598%
5/12/2022Yakira Capital Management Inc.88,683$0.56M0.1%+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$0.29M0.0%+21.1%0.548%
1/20/2022Radnor 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%
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$0.38M0.0%-64.4%0.588%
8/25/2021Marshall Wace LLP39,150$0.25M0.0%-57.3%0.292%
8/17/2021Bridgeway Capital Management LLC59,200$0.38M0.0%-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$0.30M0.0%+316.2%0.347%
8/16/2021Western Standard LLC1,269,558$8.11M4.8%+25.5%9.467%
8/16/2021Marshall Wace LLP39,150$0.25M0.0%-57.3%0.292%
8/13/2021Renaissance Technologies LLC101,970$0.65M0.0%-45.8%0.760%
8/13/2021Northern Trust Corp31,678$0.20M0.0%-12.5%0.236%
8/13/2021Geode Capital Management LLC96,692$0.62M0.0%+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$0.27M0.0%+140.7%0.315%
5/12/2021Geode Capital Management LLC91,208$0.57M0.0%+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%
(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, 42 institutional investors and hedge funds held shares of Merrimack Pharmaceuticals. The most heavily invested institutionals were Western Standard LLC ($17.53M), 22NW LP ($11.63M), BlackRock Inc. ($8.32M), Madison Avenue Partners LP ($6.80M), Dimensional Fund Advisors LP ($5.66M), Point72 Asset Management L.P. ($4.13M), and Vanguard Group Inc. ($3.85M).Learn more on MACK's institutional investors.

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

55.90% 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 36 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. ($0.77M), Madison Avenue Partners LP ($0.55M), BlackRock Inc. ($0.47M), Western Standard LLC ($0.45M), Sepio Capital LP ($0.25M), Geode Capital Management LLC ($0.15M), and State Street Corp ($0.13M).

How much institutional buying is happening at Merrimack Pharmaceuticals?

Institutional investors have bought a total of 3,431,772 shares in the last 24 months. This purchase volume represents approximately $32.38M in transactions.

Which Merrimack Pharmaceuticals major shareholders have been selling company stock?

Of the 17 institutional investors that sold Merrimack Pharmaceuticals stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Nantahala Capital Management LLC ($0.36M), 22NW LP ($0.22M), Western Standard LLC ($97.10K), Boothbay Fund Management LLC ($71K), Yakira Capital Management Inc. ($43.70K), Dimensional Fund Advisors LP ($33.63K), and Sepio Capital LP ($21.77K).

How much institutional selling is happening at Merrimack Pharmaceuticals?

Institutional investors have sold a total of 912,976 shares in the last 24 months. This volume of shares sold represents approximately $8.44M in transactions.


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This page (NASDAQ:MACK) was last updated on 12/3/2023 by MarketBeat.com Staff

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