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Rhythm Pharmaceuticals (RYTM) Institutional Ownership

Rhythm Pharmaceuticals logo
$102.12 -2.45 (-2.34%)
Closing price 09/5/2025 04:00 PM Eastern
Extended Trading
$100.11 -2.01 (-1.97%)
As of 09/5/2025 08:00 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 Rhythm Pharmaceuticals (NASDAQ:RYTM)

Number of
Institutional Buyers
(last 12 months)
155
Total
Institutional Inflows
(last 12 months)
$683.64M
Number of
Institutional Sellers
(last 12 months)
89
Total
Institutional Outflows
(last 12 months)
$521.96M
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RYTM Institutional Buying and Selling by Quarter

Rhythm Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/4/2025 Osaic Holdings Inc.979$62K0.0%+65.9%0.001%
8/19/2025 State of Wyoming1,065$67K0.0%N/A0.002%
8/15/2025 Tower Research Capital LLC TRC 6,111$386K0.0%+477.6%0.009%
8/15/2025 E Fund Management Co. Ltd.5,761$364K0.0%+6.8%0.009%
8/15/2025 Captrust Financial Advisors17,471$1.10M0.0%+0.7%0.026%
8/15/2025 Rafferty Asset Management LLC51,611$3.26M0.0%-10.6%0.078%
8/15/2025 Opaleye Management Inc.475,000$30.02M6.1%-3.1%0.715%
8/15/2025 Perceptive Advisors LLC2,418,299$152.81M13.6%-5.1%3.641%
8/15/2025 Lazard Asset Management LLC99,445$6.28M0.0%-3.6%0.150%
8/15/2025 Engineers Gate Manager LP17,676$1.12M0.0%-19.2%0.027%
8/15/2025 Cubist Systematic Strategies LLC64,577$4.08M0.0%-62.8%0.097%
8/15/2025 BNP Paribas Financial Markets102,239$6.46M0.0%+18.8%0.154%
8/15/2025 Bellevue Group AG20,906$1.32M0.0%+34.4%0.031%
8/15/2025 Balyasny Asset Management L.P.54,088$3.42M0.0%-84.8%0.081%
8/15/2025 Bank of America Corp DE222,152$14.04M0.0%+98.8%0.334%
8/15/2025 Adage Capital Partners GP L.L.C.341,000$21.55M0.0%N/A0.513%
8/15/2025 Alkeon Capital Management LLC1,017,700$64.31M0.1%+24.5%1.532%
8/15/2025 Ameriprise Financial Inc.173,069$10.94M0.0%+76.1%0.261%
8/14/2025 PDT Partners LLC97,638$6.17M0.3%-4.5%0.147%
8/14/2025 Orbimed Advisors LLC248,512$15.70M0.4%-34.6%0.374%
8/14/2025 California State Teachers Retirement System42,917$2.71M0.0%+0.5%0.065%
8/14/2025 Raymond James Financial Inc.10,546$666K0.0%N/A0.016%
8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.32,351$2.04M0.0%-8.3%0.049%
8/14/2025 The Manufacturers Life Insurance Company 68,132$4.31M0.0%+5.8%0.103%
8/14/2025 Sei Investments Co.33,145$2.10M0.0%+10.0%0.050%
8/14/2025 HighVista Strategies LLC28,068$1.77M0.7%-19.9%0.042%
8/14/2025 Stempoint Capital LP176,752$11.17M3.6%+303.4%0.266%
8/14/2025 Qube Research & Technologies Ltd240,345$15.19M0.0%+11.2%0.362%
8/14/2025 State Street Corp1,907,601$120.54M0.0%-3.2%2.872%
8/14/2025 Hood River Capital Management LLC543,688$34.36M0.5%-17.6%0.819%
8/14/2025 Federated Hermes Inc.1,686,494$106.57M0.2%+5.9%2.539%
8/13/2025 Jump Financial LLC17,671$1.12M0.0%-57.7%0.027%
8/13/2025 Marshall Wace LLP376,242$23.78M0.0%-29.7%0.566%
8/13/2025 First Trust Advisors LP73,714$4.66M0.0%-17.9%0.111%
8/13/2025 Kennedy Capital Management LLC57,217$3.62M0.1%+4.2%0.086%
8/13/2025 Invesco Ltd.68,924$4.36M0.0%-73.7%0.104%
8/13/2025 Panagora Asset Management Inc.119,466$7.55M0.0%-15.4%0.180%
8/13/2025 New York State Common Retirement Fund58,618$3.70M0.0%+247.9%0.088%
8/13/2025 Loomis Sayles & Co. L P591,454$37.37M0.0%-2.4%0.890%
8/13/2025 Virtus Investment Advisers LLC7,052$446K0.2%+9.4%0.011%
8/13/2025 Norges Bank207,389$13.11M0.0%N/A0.312%
8/13/2025 Russell Investments Group Ltd.130,998$8.28M0.0%+14.1%0.197%
8/12/2025 Advisors Asset Management Inc.13,596$859K0.0%+32.6%0.020%
8/12/2025 Prudential Financial Inc.7,095$423K0.0%+62.9%0.011%
8/12/2025 Rhumbline Advisers87,526$5.53M0.0%+2.1%0.132%
8/12/2025 AXQ Capital LP4,560$288K0.1%N/A0.007%
8/12/2025 Franklin Resources Inc.543,802$34.36M0.0%+66.7%0.819%
8/12/2025 Legal & General Group Plc52,681$3.33M0.0%+3.0%0.079%
8/12/2025 JPMorgan Chase & Co.783,559$49.51M0.0%+445.5%1.180%
8/12/2025 Swiss National Bank90,600$5.73M0.0%+1.5%0.136%
8/12/2025 Handelsbanken Fonder AB15,521$981K0.0%-8.8%0.023%
8/12/2025 Westfield Capital Management Co. LP1,629,468$102.97M0.4%+21.5%2.453%
8/12/2025 Artisan Partners Limited Partnership174,479$11.03M0.0%N/A0.263%
8/11/2025 Primecap Management Co. CA4,878,037$308.24M0.2%-15.7%7.344%
8/11/2025 Universal Beteiligungs und Servicegesellschaft mbH95,517$6.04M0.0%+2.6%0.144%
8/8/2025 Intech Investment Management LLC27,443$1.73M0.0%-19.0%0.043%
8/8/2025 Creative Planning17,222$1.09M0.0%+39.6%0.027%
8/8/2025 SG Americas Securities LLC6,185$391K0.0%-68.6%0.010%
8/8/2025 Candriam S.C.A.312,452$19.75M0.1%+7.2%0.491%
8/8/2025 Police & Firemen s Retirement System of New Jersey12,359$781K0.0%+6.0%0.019%
8/8/2025 Geode Capital Management LLC1,311,253$82.87M0.0%+1.9%2.061%
8/8/2025 PNC Financial Services Group Inc.5,543$350K0.0%+22.7%0.009%
8/8/2025 KBC Group NV1,707$108K0.0%-24.2%0.003%
8/7/2025 ProShare Advisors LLC13,536$855K0.0%-7.9%0.021%
8/7/2025 Profund Advisors LLC11,254$711K0.0%-9.6%0.018%
8/7/2025 Connor Clark & Lunn Investment Management Ltd.115,118$7.27M0.0%+127.7%0.181%
8/7/2025 Los Angeles Capital Management LLC3,872$245K0.0%N/A0.006%
8/6/2025 Savant Capital LLC4,382$277K0.0%N/A0.007%
8/5/2025 Bank of New York Mellon Corp184,109$11.63M0.0%+25.6%0.289%
8/5/2025 Freestone Capital Holdings LLC3,700$234K0.0%N/A0.006%
8/4/2025 Strs Ohio17,400$1.10M0.0%-5.9%0.027%
8/1/2025 Teacher Retirement System of Texas12,772$807K0.0%+3.0%0.020%
7/31/2025 State of New Jersey Common Pension Fund D30,373$1.92M0.0%-14.2%0.048%
7/31/2025 AlphaQuest LLC1,470$93K0.0%-77.8%0.002%
7/29/2025 Chicago Partners Investment Group LLC3,115$197K0.0%-11.3%0.005%
7/28/2025 Allianz Asset Management GmbH12,100$765K0.0%+98.4%0.019%
7/28/2025 TD Asset Management Inc56,000$3.54M0.0%+11.6%0.088%
7/25/2025 CWM LLC3,091$195K0.0%+19.6%0.005%
7/24/2025 Aberdeen Group plc67,657$4.28M0.0%-37.4%0.106%
7/24/2025 Leo Wealth LLC13,445$850K0.1%-16.0%0.021%
7/23/2025 KLP Kapitalforvaltning AS10,200$645K0.0%+9.7%0.016%
7/21/2025 Mirae Asset Global Investments Co. Ltd.2,458$155K0.0%+16.2%0.004%
7/17/2025 Avior Wealth Management LLC5,635$356K0.0%+22.8%0.009%
7/14/2025 Toth Financial Advisory Corp10,000$632K0.1%N/A0.016%
7/11/2025 Wedge Capital Management L L P NC29,991$1.90M0.0%-18.9%0.047%
7/11/2025 Assenagon Asset Management S.A.237,998$15.04M0.0%+972.4%0.374%
7/9/2025 Harbor Capital Advisors Inc.86,546$5.47M0.2%+12.0%0.136%
7/8/2025 E. Ohman J or Asset Management AB8,213$519K0.0%N/A0.013%
6/18/2025 Voya Investment Management LLC85,849$4.55M0.0%-11.6%0.135%
5/29/2025 Rhumbline Advisers85,719$4.54M0.0%+3.6%0.135%
5/28/2025 Strs Ohio18,500$980K0.0%N/A0.029%
5/23/2025 Siren L.L.C.277,533$14.70M0.8%N/A0.436%
5/20/2025 Intech Investment Management LLC33,893$1.80M0.0%+20.7%0.053%
5/19/2025 Bayforest Capital Ltd3,134$166K0.1%N/A0.005%
5/19/2025 UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC125,782$6.66M0.0%-42.4%0.198%
5/16/2025 Voleon Capital Management LP 13,819$732K0.1%N/A0.022%
5/16/2025 Goldman Sachs Group Inc.1,637,908$86.76M0.0%-9.6%2.575%
5/16/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.35,282$1.87M0.0%+6.4%0.055%
5/16/2025 Checkpoint Capital L.P.907,240$48.06M26.4%+24.6%1.426%
5/16/2025 Cinctive Capital Management LP4,356$231K0.0%-94.7%0.007%
(Data available from 1/1/2016 forward)

RYTM Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of RYTM shares?

During the previous two years, 215 institutional investors and hedge funds held shares of Rhythm Pharmaceuticals. The most heavily invested institutionals were Primecap Management Co. CA ($308.24M), Baker BROS. Advisors LP ($296.87M), Vanguard Group Inc. ($182.48M), Perceptive Advisors LLC ($152.81M), State Street Corp ($120.54M), Federated Hermes Inc. ($106.57M), and Westfield Capital Management Co. LP ($102.97M).Learn more on Rhythm Pharmaceuticals' institutional investors.

Which institutional investors have been buying Rhythm Pharmaceuticals' stock?

Of the 182 institutional investors that purchased Rhythm Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Perceptive Advisors LLC ($1.95M), Westfield Capital Management Co. LP ($1.63M), Healthcare of Ontario Pension Plan Trust Fund ($1.14M), JPMorgan Chase & Co. ($822.91K), Price T Rowe Associates Inc. MD ($648.52K), Loomis Sayles & Co. L P ($636.63K), and Janus Henderson Group PLC ($625.91K).

How much institutional buying is happening at Rhythm Pharmaceuticals?

Institutional investors have bought a total of 12,189,543 shares in the last 24 months. This purchase volume represents approximately $683.64M in transactions.

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

Of the 89 institutional investors that sold Rhythm Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Primecap Management Co. CA ($2.43M), Frazier Life Sciences Management L.P. ($1.74M), Baker BROS. Advisors LP ($793.88K), Nisa Investment Advisors LLC ($373.06K), Alkeon Capital Management LLC ($350K), Balyasny Asset Management L.P. ($301.62K), and Checkpoint Capital L.P. ($258.72K).

How much institutional selling is happening at Rhythm Pharmaceuticals?

Institutional investors have sold a total of 9,302,456 shares in the last 24 months. This volume of shares sold represents approximately $521.96M in transactions.


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This page (NASDAQ:RYTM) was last updated on 9/6/2025 by MarketBeat.com Staff
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