Rhythm Pharmaceuticals (RYTM) Ownership - Who Owns Rhythm Pharmaceuticals?

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Recent Insider Trading Activity

Date	Name	Activity	Value
Mar 06, 2026	Christopher Paul German	xxxxxxxxxxxxx	$502790

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Recent Hedge Fund Trading Activity

Date	Firm	Activity	Value
Dec 31, 2025	Woodline Partners Lp	xxxxxxxxxxxxx	$73726904
Dec 31, 2025	Driehaus Capital Management Llc	xxxxxxxxxxxxx	$137570162
Dec 31, 2025	Perceptive Advisors Llc	xxxxxxxxxxxxx	$272565692
Dec 31, 2025	Primecap Management Co	xxxxxxxxxxxxx	$372356729

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Top Shareholders

Holder	# of Shares	Type	% Holding	Value
Peter Kolchinsky	6,666,837	Institution	9.76%	603,415,417
	5,627,650	Institution	8.24%	509,358,602
Felix Baker	5,604,483	Institution	8.21%	507,261,756
	5,128,593	Institution	7.51%	464,188,952
	3,940,961	Institution	5.77%	356,696,380
Theofanis Kolokotrones	3,478,669	Institution	5.09%	314,854,331
	2,561,577	Institution	3.75%	231,848,334
Joseph Edelman	2,546,391	Institution	3.73%	230,473,849
	1,514,300	Institution	2.22%	137,059,293
Richard Driehaus	1,285,222	Institution	1.88%	116,325,443

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
5,128,593	Institution	7.51%	464,188,952
3,940,961	Institution	5.77%	356,696,380
1,514,300	Institution	2.22%	137,059,293
1,058,510	Institution	1.55%	95,805,740
987,853	Institution	1.45%	89,410,575
786,411	Institution	1.15%	71,178,060
656,337	Institution	0.96%	59,405,062
624,205	Institution	0.91%	56,496,795
571,266	Institution	0.84%	51,705,286
427,788	Institution	0.63%	38,719,092

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard Total Stock Market ETF	2,109,840	Institution	3.09%	216,300,797
Vanguard Small-Cap ETF	1,511,670	Institution	2.21%	154,976,408
iShares Russell 2000 ETF	1,254,303	Institution	1.84%	109,600,996
SPDR S&P BIOTECH ETF	888,920	Institution	1.30%	77,673,830
Vanguard Small-Cap Growth ETF	840,333	Institution	1.23%	86,150,939
Vanguard Extended Market ETF	656,022	Institution	0.96%	67,255,375
iShares Biotechnology ETF	452,409	Institution	0.66%	39,531,498
iShares Russell 2000 Growth ETF	443,929	Institution	0.65%	38,790,516
Schwab U.S. Small-Cap ETF	295,172	Institution	0.43%	25,792,129
Vanguard Russell 2000 ETF	262,242	Institution	0.38%	24,317,701

FAQ

Who Owns Rhythm Pharmaceuticals (RYTM)?

Currently, no data Available

What percentage of Rhythm Pharmaceuticals (RYTM) stock is held by institutional investors?

Currently, no data Available

What percentage of Rhythm Pharmaceuticals (RYTM) stock is held by retail investors?

Currently, no data Available

Who owns the most shares of Rhythm Pharmaceuticals (RYTM)?

Peter Kolchinsky owns the most shares of Rhythm Pharmaceuticals (RYTM).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.