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Mersana Therapeutics (MRSN) Institutional Ownership

Mersana Therapeutics logo
$0.29 -0.03 (-10.46%)
Closing price 06/27/2025 04:00 PM Eastern
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$0.32 +0.03 (+11.00%)
As of 06/27/2025 07:50 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
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Institutional Ownership Changes (13F Filings) for Mersana Therapeutics (NASDAQ:MRSN)

Current
Institutional Ownership
Percentage
93.92%
Number of
Institutional Buyers
(last 12 months)
55
Total
Institutional Inflows
(last 12 months)
$29.83M
Number of
Institutional Sellers
(last 12 months)
26
Total
Institutional Outflows
(last 12 months)
$8.67M
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MRSN Institutional Buying and Selling by Quarter

Mersana Therapeutics Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
6/27/2025 Goldman Sachs Group Inc.586,658$202K0.0%-26.9%0.471%
5/21/2025 Acadian Asset Management LLC2,989,659$1.03M0.0%N/A2.399%
5/16/2025 Goldman Sachs Group Inc.586,658$202K0.0%-26.9%0.471%
5/16/2025 Jacobs Levy Equity Management Inc.1,333,124$459K0.0%+19.9%1.070%
5/16/2025 AQR Capital Management LLC5,143,749$1.77M0.0%N/A4.127%
5/16/2025 683 Capital Management LLC1,650,000$568K0.0%+83.3%1.324%
5/15/2025 Alamea Verwaltungs GmbH604,213$208K0.2%N/A0.485%
5/15/2025 State of Wyoming295,498$102K0.0%N/A0.237%
5/14/2025 Ieq Capital LLC707,021$243K0.0%N/A0.567%
5/13/2025 Algert Global LLC135,013$46K0.0%+124.7%0.108%
5/12/2025 Nuveen LLC232,223$80K0.0%N/A0.186%
5/12/2025 Invesco Ltd.114,863$40K0.0%+109.3%0.092%
5/9/2025 Charles Schwab Investment Management Inc.280,631$97K0.0%-10.2%0.225%
5/1/2025 CWM LLC184,825$64K0.0%+102,580.6%0.148%
4/30/2025 Cerity Partners LLC244,235$84K0.0%N/A0.196%
4/16/2025 Wealth Enhancement Advisory Services LLC130,700$45K0.0%N/A0.105%
4/14/2025 Pallas Capital Advisors LLC94,531$33K0.0%N/A0.076%
3/24/2025 Wellington Management Group LLP576,148$824K0.0%-6.8%0.462%
2/20/2025 Mackenzie Financial Corp91,956$131K0.0%N/A0.074%
2/17/2025 VR Adviser LLC10,257,790$14.67M1.0%-9.4%8.304%
2/17/2025 Two Sigma Investments LP210,876$302K0.0%-29.8%0.171%
2/17/2025 Two Sigma Advisers LP448,000$641K0.0%-8.0%0.363%
2/17/2025 Sphera Funds Management LTD.690,272$987K0.2%N/A0.559%
2/17/2025Nuveen Asset Management LLC232,223$332K0.0%+53.6%0.188%
2/17/2025 OCONNOR A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS LLC410,029$586K0.0%-28.1%0.332%
2/17/2025 Millennium Management LLC795,973$1.14M0.0%+206.4%0.644%
2/17/2025 Jacobs Levy Equity Management Inc.1,111,998$1.59M0.0%+12.0%0.900%
2/17/2025 D. E. Shaw & Co. Inc.544,463$779K0.0%-46.7%0.441%
2/17/2025 Deutsche Bank AG839,724$1.20M0.0%-47.4%0.680%
2/17/2025 Cubist Systematic Strategies LLC45,296$65K0.0%N/A0.037%
2/17/2025 Bank of America Corp DE953,952$1.36M0.0%-3.6%0.772%
2/17/2025 BNP Paribas Financial Markets361,147$516K0.0%+52.3%0.292%
2/17/2025 683 Capital Management LLC900,000$1.29M0.1%+392.4%0.729%
2/17/2025 Acuta Capital Partners LLC1,120,500$1.60M1.6%-6.6%0.907%
2/14/2025 Boxer Capital Management LLC2,635,000$3.77M0.3%N/A2.133%
2/14/2025 Novo Holdings A S4,250,000$6.08M0.4%N/A3.440%
2/14/2025 Schonfeld Strategic Advisors LLC2,119,586$3.03M0.0%-4.7%1.716%
2/14/2025 Oxford Asset Management LLP65,386$94K0.0%N/A0.053%
2/14/2025 Susquehanna Fundamental Investments LLC91,852$131K0.0%N/A0.074%
2/14/2025 Price T Rowe Associates Inc. MD62,093$89K0.0%-37.3%0.050%
A new rule goes live in July — and the banks are quietly cashing in (Ad)

A major change is quietly going into effect this July — and Wall Street is already positioning for it. Big Banks have found a way to use a new asset as if it were cash. Not stocks. Not bonds. Not even the U.S. dollar. They now trust this asset more than the traditional financial system itself.

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2/14/2025 Rock Springs Capital Management LP3,431,684$4.91M0.2%+12.6%2.778%
2/14/2025 MetLife Investment Management LLC73,150$105K0.0%+115.7%0.059%
2/13/2025 XTX Topco Ltd63,530$91K0.0%-81.7%0.051%
2/13/2025 Barclays PLC182,711$262K0.0%-63.1%0.148%
2/13/2025 Renaissance Technologies LLC606,285$867K0.0%+23.0%0.491%
2/13/2025 Wells Fargo & Company MN67,483$97K0.0%+40.3%0.055%
2/12/2025 ExodusPoint Capital Management LP194,153$278K0.0%N/A0.157%
2/12/2025 Geode Capital Management LLC2,442,250$3.49M0.0%+1.2%1.977%
2/12/2025 Wellington Management Group LLP576,148$824K0.0%-6.8%0.466%
2/11/2025 Sei Investments Co.69,527$99K0.0%N/A0.056%
2/4/2025 Los Angeles Capital Management LLC159,760$228K0.0%-15.8%0.129%
2/4/2025 Bank of New York Mellon Corp346,189$495K0.0%-7.0%0.280%
1/24/2025 China Universal Asset Management Co. Ltd.26,194$37K0.0%N/A0.021%
1/17/2025 SG Americas Securities LLC112,291$161K0.0%+28.7%0.091%
1/15/2025 Avanza Fonder AB56,298$81K0.0%N/A0.046%
12/26/2024 JPMorgan Chase & Co.2,351,359$4.44M0.0%+18.9%1.903%
12/13/2024 Exome Asset Management LLC1,178,570$2.23M1.5%N/A0.954%
11/19/2024 Barclays PLC494,516$934K0.0%+32.7%0.400%
11/16/2024 Geode Capital Management LLC2,413,215$4.56M0.0%-3.2%1.967%
11/15/2024 Barclays PLC494,516$934K0.0%+32.7%0.403%
11/15/2024 XTX Topco Ltd347,255$656K0.0%+186.0%0.283%
11/15/2024 Wellington Management Group LLP618,305$1.17M0.0%+16.0%0.504%
11/15/2024 State Street Corp2,725,394$5.15M0.0%+1.6%2.222%
11/15/2024 Quarry LP30,000$57K0.0%N/A0.024%
11/15/2024 Jacobs Levy Equity Management Inc.993,046$1.88M0.0%+104.5%0.809%
11/15/2024 Atom Investors LP24,661$47K0.0%-93.3%0.020%
11/14/2024 Verition Fund Management LLC1,303,249$2.46M0.0%+11,695.2%1.062%
11/14/2024 Acuta Capital Partners LLC1,200,000$2.27M1.8%-27.8%0.978%
11/14/2024 MetLife Investment Management LLC33,916$64K0.0%-48.3%0.028%
11/13/2024 BNP Paribas Financial Markets237,198$448K0.0%-29.4%0.193%
11/13/2024 FMR LLC277,740$525K0.0%+13.2%0.226%
11/13/2024 Dynamic Technology Lab Private Ltd18,095$34K0.0%N/A0.015%
11/12/2024 HealthInvest Partners AB538,621$1.02M0.5%+191.3%0.439%
11/9/2024 Intech Investment Management LLC27,342$52K0.0%N/A0.022%
11/5/2024 GSA Capital Partners LLP271,774$514K0.0%+368.9%0.222%
11/4/2024 Los Angeles Capital Management LLC189,660$358K0.0%+8.1%0.155%
10/28/2024 US Bancorp DE16,178$31K0.0%N/A0.013%
10/10/2024 Exchange Traded Concepts LLC85,006$161K0.0%+95.8%0.069%
10/3/2024 SG Americas Securities LLC87,233$165K0.0%-37.1%0.071%
8/16/2024 Algert Global LLC44,655$90K0.0%N/A0.036%
8/15/2024 Susquehanna Fundamental Investments LLC308,691$620K0.0%+31.9%0.252%
8/15/2024 Affinity Asset Advisors LLC767,000$1.54M0.2%-23.3%0.627%
8/14/2024 Squarepoint Ops LLC252,804$508K0.0%N/A0.207%
8/14/2024 Marshall Wace LLP176,029$354K0.0%+358.0%0.144%
8/12/2024 XTX Topco Ltd121,432$244K0.0%+262.1%0.099%
8/9/2024 Renaissance Technologies LLC1,448,219$2.91M0.0%+1.4%1.184%
8/9/2024 Dimensional Fund Advisors LP13,703$28K0.0%-56.1%0.011%
8/8/2024 Federated Hermes Inc.185,507$373K0.0%+105,301.7%0.152%
8/7/2024ClariVest Asset Management LLC500,498$1.01M0.1%+6.1%0.409%
8/6/2024 Acadian Asset Management LLC71,506$143K0.0%-84.8%0.058%
A new rule goes live in July — and the banks are quietly cashing in (Ad)

A major change is quietly going into effect this July — and Wall Street is already positioning for it. Big Banks have found a way to use a new asset as if it were cash. Not stocks. Not bonds. Not even the U.S. dollar. They now trust this asset more than the traditional financial system itself.

To help you get started, we're giving away a FREE Wealth Protection Guide that shows you exactly how
8/6/2024 Los Angeles Capital Management LLC175,420$353K0.0%-11.0%0.143%
7/29/2024 Principal Financial Group Inc.18,278$37K0.0%-42.5%0.015%
7/26/2024 Bank of New York Mellon Corp452,829$910K0.0%+19.6%0.370%
7/12/2024 SG Americas Securities LLC138,722$279K0.0%+313.9%0.113%
5/17/2024 Walleye Trading LLC31,526$141K0.0%N/A0.026%
5/16/2024 California State Teachers Retirement System11,145$50K0.0%-38.9%0.009%
5/16/2024 Jacobs Levy Equity Management Inc.809,879$3.63M0.0%-13.0%0.662%
5/15/2024 Price T Rowe Associates Inc. MD79,932$359K0.0%+6.6%0.065%
5/10/2024 Acadian Asset Management LLC468,923$2.10M0.0%+166.7%0.387%
5/10/2024 Vanguard Group Inc.6,274,370$28.11M0.0%+0.6%5.172%
(Data available from 1/1/2016 forward)

MRSN Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of MRSN shares?

During the previous two years, 97 institutional investors and hedge funds held shares of Mersana Therapeutics. The most heavily invested institutionals were Vanguard Group Inc. ($28.11M), Bellevue Group AG ($17.17M), VR Adviser LLC ($14.67M), Artal Group S.A. ($9.97M), Candriam S.C.A. ($7.95M), Novo Holdings A S ($6.08M), and State Street Corp ($5.15M).Learn more on Mersana Therapeutics' institutional investors.

What percentage of Mersana Therapeutics' stock is owned by institutional investors?

93.92% of Mersana Therapeutics' stock is owned by institutional investors. Learn more on MRSN's institutional investor holdings.

Which institutional investors have been buying Mersana Therapeutics' stock?

Of the 79 institutional investors that purchased Mersana Therapeutics' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: AQR Capital Management LLC ($5.14M), Novo Holdings A S ($4.25M), Acadian Asset Management LLC ($3.64M), Affinity Asset Advisors LLC ($2.85M), Boxer Capital Management LLC ($2.64M), Walleye Capital LLC ($1.87M), and 683 Capital Management LLC ($1.47M).

How much institutional buying is happening at Mersana Therapeutics?

Institutional investors have bought a total of 27,846,333 shares in the last 24 months. This purchase volume represents approximately $29.83M in transactions.

Which of Mersana Therapeutics' major shareholders have been selling company stock?

Of the 26 institutional investors that sold Mersana Therapeutics' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: VR Adviser LLC ($1.07M), Deutsche Bank AG ($756.45K), Acuta Capital Partners LLC ($542.50K), D. E. Shaw & Co. Inc. ($477.99K), Goldman Sachs Group Inc. ($431.42K), Acadian Asset Management LLC ($397.42K), and Atom Investors LP ($340.77K).

How much institutional selling is happening at Mersana Therapeutics?

Institutional investors have sold a total of 5,797,440 shares in the last 24 months. This volume of shares sold represents approximately $8.67M in transactions.


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This page (NASDAQ:MRSN) was last updated on 6/29/2025 by MarketBeat.com Staff
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