Institutional Ownership Rhythm Pharmaceuticals, Inc. (RYTM)
This table provides information about the institutional ownership of Rhythm Pharmaceuticals, Inc. (RYTM). We have compiled data on the 282 institutions that hold shares in the stock, with a total of 486 Million shares, which have been reported (via 13F filing form) to have a value of $48.3 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Perceptive Advisors LLC
New York, NY |
Nov 14, 2025 Q3 2025 |
419,104,969
shares
|
$41.7 Billion
94.44% of portfolio
|
Q3 2025
Added 17230.57%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
6,741,923
shares
|
$670 Million
0.01% of portfolio
|
Q2 2024
Added 3.25%
|
|
|
Ra Capital Management, L.P.
Boston, MA |
Nov 14, 2025 Q3 2025 |
5,681,359
shares
|
$565 Million
9.85% of portfolio
|
Q3 2025
Added 2.16%
|
|
|
Baker Bros. Advisors LP
New York, NY |
Nov 14, 2025 Q3 2025 |
5,604,483
shares
|
$557 Million
4.61% of portfolio
|
Q1 2025
Reduced 7.89%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Nov 07, 2025 Q3 2025 |
4,996,427
shares
|
$497 Million
0.01% of portfolio
|
Q3 2025
Added 39.21%
|
|
|
Primecap Management CO
Pasadena, CA |
Nov 10, 2025 Q3 2025 |
4,262,859
shares
|
$424 Million
0.34% of portfolio
|
Q3 2025
Reduced 12.61%
|
|
|
Nea Management Company, LLC
Timonium, MD |
Nov 14, 2025 Q3 2025 |
2,909,956
shares
|
$289 Million
18.37% of portfolio
|
Q1 2023
Reduced 40.73%
|
|
|
State Street Corp
Boston, MA |
Nov 14, 2025 Q3 2025 |
2,028,651
shares
|
$202 Million
0.01% of portfolio
|
Q3 2025
Added 6.35%
|
|
|
Goldman Sachs Group Inc
New York, NY |
Nov 14, 2025 Q3 2025 |
1,893,663
shares
|
$188 Million
0.02% of portfolio
|
Q3 2025
Added 9.23%
|
|
|
Federated Hermes, Inc.
Pittsburgh, PA |
Nov 03, 2025 Q3 2025 |
1,727,885
shares
|
$172 Million
0.33% of portfolio
|
Q3 2025
Added 2.45%
|
|
|
Price T Rowe Associates Inc
Baltimore, MD |
Nov 14, 2025 Q3 2025 |
1,399,897
shares
|
$139 Million
0.02% of portfolio
|
Q3 2025
Added 4.36%
|
|
|
Driehaus Capital Management LLC
Chicago, IL |
Nov 14, 2025 Q3 2025 |
1,383,775
shares
|
$138 Million
1.18% of portfolio
|
Q3 2025
Added 8.96%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Nov 12, 2025 Q3 2025 |
1,362,829
shares
|
$135 Million
0.01% of portfolio
|
Q3 2025
Added 3.93%
|
|
|
Polar Capital Holdings PLC
London, X0 |
Nov 14, 2025 Q3 2025 |
1,244,932
shares
|
$124 Million
0.68% of portfolio
|
Q3 2025
Reduced 0.47%
|
|
|
Jpmorgan Chase & CO
New York, NY |
Nov 26, 2025 Q3 2025 |
1,188,069
shares
|
$118 Million
0.01% of portfolio
|
Q3 2025
Added 727.12%
|
|
|
Janus Henderson Group PLC
London, X0 |
Nov 14, 2025 Q3 2025 |
1,160,887
shares
|
$115 Million
0.06% of portfolio
|
Q3 2025
Reduced 17.78%
|
|
|
Westfield Capital Management CO LP
Boston, MA |
Nov 10, 2025 Q3 2025 |
1,069,004
shares
|
$106 Million
0.49% of portfolio
|
Q3 2025
Reduced 20.29%
|
|
|
Alkeon Capital Management LLC
New York, NY |
Nov 13, 2025 Q3 2025 |
1,017,700
shares
|
$101 Million
0.16% of portfolio
|
Q2 2025
Added 24.46%
|
|
|
Alliancebernstein L.P.
New York, NY |
Nov 14, 2025 Q3 2025 |
979,682
shares
|
$97.4 Million
0.03% of portfolio
|
Q3 2025
Added 1493.76%
|
|
|
Checkpoint Capital L.P.
San Francisco, CA |
Nov 14, 2025 Q3 2025 |
763,707
shares
|
$75.9 Million
25.84% of portfolio
|
Q3 2025
Reduced 27.95%
|
|
|
Rock Springs Capital Management LP
Baltimore, MD |
Nov 14, 2025 Q3 2025 |
717,102
shares
|
$71.3 Million
4.84% of portfolio
|
Q3 2025
Reduced 16.73%
|
|
|
Pictet Asset Management Holding Sa
Carouge, V8 |
Nov 18, 2025 Q3 2025 |
683,017
shares
|
$67.9 Million
0.07% of portfolio
|
Q3 2025
Added 64.14%
|
|
|
Capital Research Global Investors
Los Angeles, CA |
Nov 13, 2025 Q3 2025 |
598,247
shares
|
$59.5 Million
0.01% of portfolio
|
Q3 2025
New holding
|
|
|
Woodline Partners LP
San Francisco, CA |
Nov 14, 2025 Q3 2025 |
580,183
shares
|
$57.7 Million
0.3% of portfolio
|
Q3 2025
Added 12.79%
|
|
|
Lord, Abbett & Co. LLC
Jersey City, NJ |
Nov 13, 2025 Q3 2025 |
575,984
shares
|
$57.3 Million
0.17% of portfolio
|
Q3 2025
Added 181.96%
|
|