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Rhythm Pharmaceuticals
RYTM

Overview Fund Activity

227 hedge funds and large institutions have $3.42B invested in Rhythm Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 45 funds opening new positions, 85 increasing their positions, 69 reducing their positions, and 20 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
227
Holders Change
+24
Holders Change %
+11.82%
% of All Funds
3.08%
Holding in Top 10
7
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-36.36%
% of All Funds
0.1%
New
45
Increased
85
Reduced
69
Closed
20
Calls
$21.5M
Puts
$3.46M
Net Calls
+$18M
Net Calls Change
-$6.98M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$83.4M
2
Westfield Capital Management
Westfield Capital Management
Massachusetts
+$71M
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$27.2M
4
Janus Henderson Group
Janus Henderson Group
United Kingdom
+$23.9M
5
SL
Siren LLC
Connecticut
+$14.7M

Top Sellers

1
FLSM
Frazier Life Sciences Management
California
-$63.1M
2
PA
Perceptive Advisors
New York
-$60M
3
PCH
Polar Capital Holdings
United Kingdom
-$53M
4
Primecap Management
Primecap Management
California
-$41.5M
5
BBA
Baker Bros. Advisors
New York
-$25.4M
Name Holding Trade Value Shares
Change 		Shares
Change %
S
201
SignatureFD
Georgia
$11.9K +$106 +2 +0.9%
Daiwa Securities Group
202
Daiwa Securities Group
Japan
$11K – – –
Optiver Holding
203
Optiver Holding
Netherlands
$8.21K +$8.21K +155 New
US Bancorp
204
US Bancorp
Minnesota
$7.73K +$265 +5 +4%
TC
205
Truvestments Capital
Florida
$7.31K – – –
Royal Bank of Canada
206
Royal Bank of Canada
Ontario, Canada
$7K -$57.9K -1,083 -89%
LC
207
Lindbrook Capital
California
$6.83K +$159 +3 +2%
RIL
208
Rothschild Investment LLC
Illinois
$4.77K +$1.32K +25 +38%
Bessemer Group
209
Bessemer Group
New Jersey
$4K +$2.18K +36 +120%
SC
210
SouthState Corp
Florida
$3.76K +$3.76K +71 New
AF
211
Allworth Financial
California
$3.15K +$3.15K +50 New
SCM
212
Sterling Capital Management
North Carolina
$3.07K +$106 +2 +4%
TWD
213
True Wealth Design
Ohio
$3.02K +$3.02K +57 New
VCM
214
Versant Capital Management
Arizona
$2.91K +$2.91K +55 New
Northwestern Mutual Wealth Management
215
Northwestern Mutual Wealth Management
Wisconsin
$2.54K +$2.54K +48 New
CCM
216
Coldstream Capital Management
Washington
$1.59K +$1.59K +30 New
OP
217
ORG Partners
Indiana
$1.2K +$1.2K +24 New
PFBT
218
Parkside Financial Bank & Trust
Missouri
$1.06K +$1.06K +20 New
SC
219
Stephens Consulting
Michigan
$1.06K +$1.06K +20 New
PA
220
Parallel Advisors
California
$1.01K – – –
EWA
221
EverSource Wealth Advisors
Alabama
$1.01K +$371 +7 +58%
FFA
222
Farther Finance Advisors
California
$700 – – –
CFO
223
CVA Family Office
Colorado
$636 – – –
WA
224
Whipplewood Advisors
Colorado
$583 +$90 +2 +18%
HCP
225
Hexagon Capital Partners
Arkansas
$583 +$212 +4 +57%
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