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%	585,414,957
	5,653,254	Institution	8.28%	496,412,234
Felix Baker	5,604,483	Institution	8.21%	492,129,652
	5,128,593	Institution	7.51%	450,341,751
Theofanis Kolokotrones	3,478,669	Institution	5.09%	305,461,925
	3,277,081	Institution	4.80%	287,760,483
	2,569,928	Institution	3.76%	225,665,378
Joseph Edelman	2,546,391	Institution	3.73%	223,598,594
Richard Driehaus	1,285,222	Institution	1.88%	112,855,344
	1,178,200	Institution	1.73%	103,457,742

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
5,128,593	Institution	7.51%	450,341,751
3,277,081	Institution	4.80%	287,760,483
1,178,200	Institution	1.73%	103,457,742
987,853	Institution	1.45%	86,743,372
786,411	Institution	1.15%	69,054,750
777,700	Institution	1.14%	68,289,837
670,191	Institution	0.98%	58,849,472
624,205	Institution	0.91%	54,811,441
558,887	Institution	0.82%	49,075,867
427,788	Institution	0.63%	37,564,064

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard Total Stock Market ETF	2,177,436	Institution	3.19%	189,371,609
Vanguard Small-Cap ETF	1,576,671	Institution	2.31%	137,123,077
iShares Russell 2000 ETF	1,246,905	Institution	1.83%	109,490,728
SPDR S&P BIOTECH ETF	1,039,982	Institution	1.52%	90,769,629
Vanguard Small-Cap Growth ETF	882,888	Institution	1.29%	76,784,769
Vanguard Extended Market ETF	678,823	Institution	0.99%	59,037,236
iShares Biotechnology ETF	476,018	Institution	0.70%	41,799,141
iShares Russell 2000 Growth ETF	427,369	Institution	0.63%	37,527,272
Schwab U.S. Small-Cap ETF	295,838	Institution	0.43%	25,820,741
Vanguard Russell 2000 ETF	260,581	Institution	0.38%	22,662,730

FAQ

Who Owns Rhythm Pharmaceuticals Inc (RYTM)?

Currently, no data Available

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

Currently, no data Available

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

Currently, no data Available

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

Peter Kolchinsky owns the most shares of Rhythm Pharmaceuticals Inc (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.