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 245 institutions that hold shares in the stock, with a total of 64 Million shares, which have been reported (via 13F filing form) to have a value of $6.32 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
6,741,923
shares
|
$666 Million
0.01% of portfolio
|
Q2 2024
Added 3.25%
|
|
|
Baker Bros. Advisors LP
New York, NY |
Aug 14, 2025 Q2 2025 |
5,604,483
shares
|
$554 Million
3.59% of portfolio
|
Q1 2025
Reduced 7.89%
|
|
|
Ra Capital Management, L.P.
Boston, MA |
Aug 14, 2025 Q2 2025 |
5,561,359
shares
|
$550 Million
7.68% of portfolio
|
Q2 2025
Reduced 8.6%
|
|
|
Primecap Management CO
Pasadena, CA |
Aug 11, 2025 Q2 2025 |
4,878,037
shares
|
$482 Million
0.25% of portfolio
|
Q2 2025
Reduced 15.71%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Aug 11, 2025 Q2 2025 |
3,589,114
shares
|
$355 Million
0.0% of portfolio
|
Q2 2025
Added 4.19%
|
|
|
Nea Management Company, LLC
Timonium, MD |
Aug 14, 2025 Q2 2025 |
2,909,956
shares
|
$288 Million
15.24% of portfolio
|
Q1 2023
Reduced 40.73%
|
|
|
Perceptive Advisors LLC
New York, NY |
Aug 14, 2025 Q2 2025 |
2,418,299
shares
|
$239 Million
6.71% of portfolio
|
Q2 2025
Reduced 5.11%
|
|
|
State Street Corp
Boston, MA |
Aug 14, 2025 Q2 2025 |
1,907,601
shares
|
$189 Million
0.0% of portfolio
|
Q2 2025
Reduced 3.2%
|
|
|
Goldman Sachs Group Inc
New York, NY |
Aug 14, 2025 Q2 2025 |
1,733,722
shares
|
$171 Million
0.02% of portfolio
|
Q2 2025
Added 5.85%
|
|
|
Federated Hermes, Inc.
Pittsburgh, PA |
Aug 13, 2025 Q2 2025 |
1,686,494
shares
|
$167 Million
0.21% of portfolio
|
Q2 2025
Added 5.94%
|
|
|
Janus Henderson Group PLC
London, X0 |
Aug 14, 2025 Q2 2025 |
1,411,902
shares
|
$140 Million
0.05% of portfolio
|
Q2 2025
Reduced 14.71%
|
|
|
Price T Rowe Associates Inc
Baltimore, MD |
Aug 14, 2025 Q2 2025 |
1,341,392
shares
|
$133 Million
0.01% of portfolio
|
Q2 2025
Added 11.87%
|
|
|
Westfield Capital Management CO LP
Boston, MA |
May 09, 2025 Q1 2025 |
1,341,092
shares
|
$133 Million
0.37% of portfolio
|
Q1 2025
New holding
|
|
|
Geode Capital Management, LLC
Boston, MA |
Aug 08, 2025 Q2 2025 |
1,311,253
shares
|
$130 Million
0.01% of portfolio
|
Q2 2025
Added 1.87%
|
|
|
Driehaus Capital Management LLC
Chicago, IL |
Aug 14, 2025 Q2 2025 |
1,269,952
shares
|
$126 Million
0.78% of portfolio
|
Q2 2025
Reduced 12.9%
|
|
|
Polar Capital Holdings PLC
London, X0 |
Aug 14, 2025 Q2 2025 |
1,250,870
shares
|
$124 Million
0.45% of portfolio
|
Q2 2025
Added 150.17%
|
|
|
Checkpoint Capital L.P.
San Francisco, CA |
Aug 14, 2025 Q2 2025 |
1,060,000
shares
|
$105 Million
31.21% of portfolio
|
Q2 2025
Added 16.84%
|
|
|
Alkeon Capital Management LLC
New York, NY |
Aug 13, 2025 Q2 2025 |
1,017,700
shares
|
$101 Million
0.11% of portfolio
|
Q2 2025
Added 24.46%
|
|
|
Rock Springs Capital Management LP
Baltimore, MD |
Aug 14, 2025 Q2 2025 |
861,153
shares
|
$85.1 Million
3.69% of portfolio
|
Q2 2025
Added 3.23%
|
|
|
Loomis Sayles & CO L P
|
Aug 13, 2025 Q2 2025 |
591,454
shares
|
$58.5 Million
0.05% of portfolio
|
Q2 2025
Reduced 2.36%
|
|
|
Sofinnova Investments, Inc.
Menlo Park, CA |
Aug 14, 2025 Q2 2025 |
586,010
shares
|
$57.9 Million
2.51% of portfolio
|
Q2 2025
Added 31.15%
|
|
|
Franklin Resources Inc
San Mateo, CA |
Aug 12, 2025 Q2 2025 |
543,802
shares
|
$53.8 Million
0.01% of portfolio
|
Q2 2025
Added 66.73%
|
|
|
Hood River Capital Management LLC
Palm Beach Gardens, FL |
Aug 14, 2025 Q2 2025 |
543,688
shares
|
$53.7 Million
0.55% of portfolio
|
Q2 2025
Reduced 17.55%
|
|
|
Morgan Stanley
New York, NY |
Aug 15, 2025 Q2 2025 |
524,480
shares
|
$51.8 Million
0.0% of portfolio
|
Q2 2025
Added 4.05%
|
|
|
Woodline Partners LP
San Francisco, CA |
Aug 14, 2025 Q2 2025 |
514,381
shares
|
$50.8 Million
0.18% of portfolio
|
Q2 2025
New holding
|