RHYTHM PHARMACEUTICALS INC

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RYTM·76243J105·US·equity·Healthcare - Biotechnology-13D/G

RYTM (RHYTHM PHARMACEUTICALS INC) is held by 151 institutional investors as of Q1 2026. Largest holders: RA CAPITAL MANAGEMENT, L.P. ($579.8M), BlackRock, Inc. ($542.4M), BAKER BROS. ADVISORS LP ($487.4M). Net institutional sentiment: Mixed.

151

Holders

Avg rating(10 Elite)

$4.8B

Total Value

54% (166)

Fund Consensus

85 buying - 72 selling

Smart Money Verdict

View all

34Negative MomentumStrong Convergence

Institutional (13F)50

Insider (Form 4)0

Activist (13D/13G)49

Congressional (STOCK Act)

No data

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See how RYTM's score breaks down across 4 SEC sources

Holder Quality

10

★★★★★

Elite

46

★★★★

Strong

52

★★★

Solid

47

★★

Below

10

★

Weak

Held by 151 funds

10 elite

Who's Trading

ActivistVAVanguard Capital Management5.0%Apr 30, 2026

13F: Mar 31, 2026Insider & Congress: Updated regularly

Positions (165)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
RA CAPITAL MANAGEMENT, L.P.	Unchanged	6.7M	$579.8M	6.1%	+132.98%	0
BlackRock, Inc.	Decreased	6.2M(-1.0%)	$542.4M	0.0%	+59.98%	0
BAKER BROS. ADVISORS LP	Unchanged	5.6M	$487.4M	2.8%	+279.67%	0
PRIMECAP MANAGEMENT CO/CA/	Decreased	3.4M(-1.8%)	$297.2M	0.2%	+346.32%	0
STATE STREET CORP	Increased	2.3M(+3.3%)	$197.6M	0.0%	+65.27%	32
GOLDMAN SACHS GROUP INC	Increased	2M(+7.3%)	$170.9M	0.0%	+45.06%	33
WESTFIELD CAPITAL MANAGEMENT CO LP	Increased	1.9M(+52.2%)	$167.8M	0.7%	+24.27%	60
FMR LLC	Decreased	1.7M(-1.0%)	$147M	0.0%	+50.97%	0
Polar Capital Holdings Plc	Increased	1.6M(+36.3%)	$140.5M	0.5%	+56.08%	47
CITADEL ADVISORS LLC	Increased	1.4M(+825.3%)	$123.4M	0.0%	-0.36%	49
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.4M(+3.0%)	$123.2M	0.0%	+195.48%	31
JPMORGAN CHASE & CO	Increased	1.6M(+9.1%)	$120M	0.0%	+11.84%	33
FEDERATED HERMES, INC.	Decreased	1.3M(-20.8%)	$111.9M	0.2%	+259.84%	0
ALLIANCEBERNSTEIN L.P.	Decreased	910,413(-2.1%)	$97.5M	0.0%	-5.35%	0
Capital Research Global Investors	Increased	1.1M(+13.2%)	$97M	0.0%	-10.79%	34
JANUS HENDERSON GROUP PLC	Decreased	918,153(-18.5%)	$79.9M	0.0%	+94.80%	0
Point72 Asset Management, L.P.	Increased	846,801(+97.2%)	$73.6M	0.1%	-7.90%	48
Woodline Partners LP	Increased	758,891(+10.2%)	$66M	0.2%	+21.02%	39
AGADAGE CAPITAL PARTNERS GP, L.L.C.	Increased	725,744(+16.8%)	$63.1M	0.1%	+10.54%	34
MORGAN STANLEY	Increased	703,978(+8.1%)	$61.2M	0.0%	+40.84%	32