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Marinus Pharmaceuticals (MRNS) Institutional Ownership

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Institutional Ownership Changes (13F Filings) for Marinus Pharmaceuticals (NASDAQ:MRNS)

Current
Institutional Ownership
Percentage
98.80%
Number of
Institutional Buyers
(last 12 months)
21
Total
Institutional Inflows
(last 12 months)
$14.95M
Number of
Institutional Sellers
(last 12 months)
6
Total
Institutional Outflows
(last 12 months)
$2.20M
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MRNS Institutional Buying and Selling by Quarter

Marinus Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/17/2025Woodline Partners LP2,335,681$1.25M0.0%+84.7%4.230%
2/17/2025Tang Capital Management LLC1,641,945$879K0.1%-65.1%2.973%
2/17/2025Millennium Management LLC239,414$128K0.0%-50.4%0.434%
2/17/2025Beryl Capital Management LLC4,227,460$2.26M0.5%N/A7.656%
2/13/2025GABELLI & Co INVESTMENT ADVISERS INC.100,000$54K0.0%N/A0.181%
2/13/2025XTX Topco Ltd219,819$118K0.0%+1,564.7%0.398%
2/12/2025Geode Capital Management LLC529,053$283K0.0%-6.9%0.958%
2/12/2025JPMorgan Chase & Co.487,584$261K0.0%+266.1%0.883%
2/11/2025Virtu Financial LLC66,717$36K0.0%N/A0.121%
1/27/2025 Deltec Asset Management LLC200,000$107K0.0%N/A0.362%
1/14/2025 Assenagon Asset Management S.A.57,128$31K0.0%-87.1%0.103%
12/26/2024JPMorgan Chase & Co.133,191$234K0.0%+1,968.5%0.241%
11/27/2024Franklin Resources Inc.4,713,014$8.48M0.0%+34.9%8.540%
11/25/2024World Investment Advisors LLC59,320$104K0.0%N/A0.107%
11/16/2024Geode Capital Management LLC568,517$1.00M0.0%-7.9%1.030%
11/15/2024Jacobs Levy Equity Management Inc.414,269$729K0.0%+39.5%0.751%
11/15/2024Point72 Asia Singapore Pte. Ltd.19,278$34K0.0%-64.9%0.035%
11/14/2024Suvretta Capital Management LLC5,073,913$8.93M0.3%+32.8%9.212%
11/5/2024GSA Capital Partners LLP1,016,634$1.79M0.1%+409.4%1.846%
10/25/2024abrdn plc2,658,527$4.68M0.0%+146.1%4.827%
10/23/2024 Assenagon Asset Management S.A.444,185$782K0.0%+70.3%0.809%
9/16/2024Point72 DIFC Ltd23,698$28K0.0%N/A0.043%
9/16/2024Point72 Asia Singapore Pte. Ltd.54,878$64K0.0%N/A0.100%
8/15/2024AQR Capital Management LLC31,333$37K0.0%+70.3%0.057%
8/15/2024Point72 Asia Singapore Pte. Ltd.54,878$64K0.0%N/A0.100%
8/14/2024Squarepoint Ops LLC175,735$206K0.0%N/A0.320%
8/14/2024Point72 DIFC Ltd23,698$28K0.0%N/A0.043%
8/12/2024XTX Topco Ltd197,940$232K0.0%N/A0.360%
8/9/2024Renaissance Technologies LLC621,625$727K0.0%N/A1.132%
8/6/2024Acadian Asset Management LLC695,972$813K0.0%N/A1.267%
8/1/2024Rhumbline Advisers28,709$34K0.0%-62.8%0.052%
8/1/2024Hussman Strategic Advisors Inc.84,000$98K0.0%+14.3%0.153%
7/19/2024Values First Advisors Inc.62,671$73K0.0%+501.8%0.114%
7/18/2024 Assenagon Asset Management S.A.260,789$305K0.0%-3.8%0.475%
7/12/2024SG Americas Securities LLC29,178$34K0.0%N/A0.053%
5/16/2024Jacobs Levy Equity Management Inc.42,449$384K0.0%N/A0.077%
5/16/2024Bain Capital Life Sciences Investors LLC1,393,380$12.60M1.0%-2.6%2.537%
5/15/2024Avoro Capital Advisors LLC4,140,607$37.43M0.4%+31.4%7.538%
5/10/2024Vanguard Group Inc.2,805,920$25.37M0.0%+5.0%5.108%
5/2/2024Hussman Strategic Advisors Inc.73,500$664K0.2%N/A0.134%
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3/5/2024Wellington Management Group LLP241,299$2.62M0.0%+54.8%0.442%
2/15/2024Opaleye Management Inc.563,500$6.13M1.6%-3.5%1.033%
2/14/2024Superstring Capital Management LP462,444$5.03M3.6%N/A0.847%
2/13/2024Campbell & CO Investment Adviser LLC105,383$1.15M0.1%N/A0.193%
2/12/2024Alpha DNA Investment Management LLC49,664$540K0.2%-35.6%0.091%
2/9/2024Franklin Resources Inc.3,833,955$41.68M0.0%+1.3%7.026%
2/9/2024Trexquant Investment LP50,851$553K0.0%N/A0.093%
2/5/2024Victory Capital Management Inc.83,270$905K0.0%-11.9%0.153%
2/5/2024Mach 1 Financial Group LLC43,828$476K0.2%-35.7%0.080%
2/1/2024New York State Common Retirement Fund17,120$186K0.0%-14.6%0.031%
2/1/2024Jennison Associates LLC2,959,161$32.17M0.0%+0.1%5.423%
1/31/2024abrdn plc552,572$6.01M0.0%N/A1.013%
1/24/2024China Universal Asset Management Co. Ltd.6,307$69K0.0%+383.7%0.012%
1/19/2024Denali Advisors LLC13,600$148K0.0%-48.9%0.025%
1/17/2024 Assenagon Asset Management S.A.271,157$2.95M0.0%-47.0%0.497%
1/12/2024SG Americas Securities LLC12,289$134K0.0%N/A0.023%
1/1/2024Wellington Management Group LLP155,844$1.26M0.0%-0.7%0.286%
12/18/2023Vanguard Group Inc.2,577,475$20.75M0.0%+1.2%4.723%
11/15/2023Acuta Capital Partners LLC19,500$157K0.1%N/A0.036%
11/15/2023Adage Capital Partners GP L.L.C.2,904,476$23.38M0.1%+6.3%5.322%
11/14/2023Eventide Asset Management LLC4,529,997$36.47M0.7%+42.8%8.301%
11/14/2023Schonfeld Strategic Advisors LLC253,412$2.04M0.0%+69.5%0.464%
11/14/2023Sherbrooke Park Advisers LLC17,539$141K0.0%N/A0.032%
11/8/2023Values First Advisors Inc.13,461$108K0.1%-17.1%0.027%
11/7/2023Alpha DNA Investment Management LLC77,083$621K0.3%N/A0.152%
11/7/2023Barclays PLC9,012$73K0.0%-84.4%0.018%
11/6/2023 Assenagon Asset Management S.A.511,193$4.12M0.0%-25.1%1.010%
11/6/2023Victory Capital Management Inc.94,550$761K0.0%+61.2%0.187%
10/31/2023Jennison Associates LLC2,955,343$23.79M0.0%+58.4%5.839%
10/25/2023BluePath Capital Management LLC4,730$38K0.0%N/A0.009%
10/20/2023Denali Advisors LLC26,600$214K0.1%-49.4%0.053%
10/17/2023Mach 1 Financial Group LLC68,203$549K0.2%N/A0.135%
10/11/2023AE Wealth Management LLC69,230$557K0.0%N/A0.137%
8/15/2023Suvretta Capital Management LLC4,057,611$44.07M2.4%-16.0%8.017%
8/14/2023Jefferies Financial Group Inc.254,021$2.76M0.0%-49.6%0.502%
8/14/2023Graham Capital Management L.P.31,162$338K0.0%-60.1%0.062%
8/11/2023Harvest Investment Services LLC44,572$484K0.3%N/A0.088%
8/11/2023Campbell & CO Investment Adviser LLC11,856$129K0.0%N/A0.023%
8/11/2023Franklin Resources Inc.1,316,868$14.30M0.0%+28.4%2.605%
8/10/2023Metropolitan Life Insurance Co NY2,731$30K0.0%N/A0.005%
8/10/2023Tekla Capital Management LLC411,101$4.47M0.2%-10.0%0.813%
8/8/2023International Biotechnology Trust PLC90,000$977K0.3%N/A0.178%
8/4/2023American International Group Inc.23,982$260K0.0%N/A0.047%
8/4/2023Maven Securities LTD25,000$272K0.0%-28.6%0.049%
8/3/2023Jennison Associates LLC1,865,430$20.26M0.0%N/A3.690%
8/3/2023Bank of New York Mellon Corp163,770$1.78M0.0%+214.9%0.324%
8/2/2023Values First Advisors Inc.16,245$176K0.1%-11.1%0.032%
8/2/2023Bank of Montreal Can188,722$2.06M0.0%N/A0.373%
7/27/2023Victory Capital Management Inc.58,660$637K0.0%N/A0.116%
7/18/2023Denali Advisors LLC52,600$571K0.2%+447.9%0.104%
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5/16/2023Altium Capital Management LP228,714$1.58M0.9%N/A0.452%
5/15/2023Suvretta Capital Management LLC4,831,261$33.34M1.4%+0.2%9.558%
5/15/2023AIGH Capital Management LLC1,336,150$9.22M3.4%N/A2.643%
5/12/2023Mirabella Financial Services LLP57,388$396K0.1%+425.5%0.116%
5/12/2023Tejara Capital Ltd38,649$267K0.1%-59.7%0.078%
5/10/2023Simplify Asset Management Inc.150,000$1.04M0.1%N/A0.302%
5/10/2023Tekla Capital Management LLC456,780$3.15M0.1%N/A0.920%
5/9/2023GMT Capital Corp1,181,570$8.15M0.3%N/A2.379%
5/9/2023Y Intercept Hong Kong Ltd14,479$100K0.0%N/A0.029%
5/4/2023Barclays PLC643,015$4.44M0.0%+3,441.8%1.295%
(Data available from 1/1/2016 forward)

MRNS Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of MRNS shares?

During the previous two years, 60 institutional investors and hedge funds held shares of Marinus Pharmaceuticals. The most heavily invested institutionals were Avoro Capital Advisors LLC ($37.43M), Eventide Asset Management LLC ($36.47M), Jennison Associates LLC ($32.17M), Vanguard Group Inc. ($25.37M), Adage Capital Partners GP L.L.C. ($23.38M), Bain Capital Life Sciences Investors LLC ($12.60M), and Suvretta Capital Management LLC ($8.93M).Learn more on Marinus Pharmaceuticals' institutional investors.

What percentage of Marinus Pharmaceuticals' stock is owned by institutional investors?

98.80% of Marinus Pharmaceuticals' stock is owned by institutional investors. Learn more on MRNS's institutional investor holdings.

Which institutional investors have been buying Marinus Pharmaceuticals' stock?

Of the 47 institutional investors that purchased Marinus Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Beryl Capital Management LLC ($4.23M), Jennison Associates LLC ($2.96M), abrdn plc ($2.13M), Franklin Resources Inc. ($1.56M), Eventide Asset Management LLC ($1.36M), Suvretta Capital Management LLC ($1.25M), and Woodline Partners LP ($1.07M).

How much institutional buying is happening at Marinus Pharmaceuticals?

Institutional investors have bought a total of 13,454,326 shares in the last 24 months. This purchase volume represents approximately $14.95M in transactions.

Which of Marinus Pharmaceuticals' major shareholders have been selling company stock?

The following institutional investors have sold Marinus Pharmaceuticals stock in the last 24 months: Tang Capital Management LLC ($3.06M), Assenagon Asset Management S.A. ($387.06K), Millennium Management LLC ($243.09K), Geode Capital Management LLC ($88.34K), Rhumbline Advisers ($48.39K), and Point72 Asia Singapore Pte. Ltd. ($35.60K).

How much institutional selling is happening at Marinus Pharmaceuticals?

Institutional investors have sold a total of 3,860,536 shares in the last 24 months. This volume of shares sold represents approximately $2.20M in transactions.


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This page (NASDAQ:MRNS) was last updated on 7/22/2025 by MarketBeat.com Staff
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