Keros Therapeutics Ownership | Who Owns Keros Therapeutics?

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Keros Therapeutics Ownership Summary

Keros Therapeutics is owned by 88.45% institutional investors, 2.50% insiders, and 9.05% retail investors. Fmr is the largest institutional shareholder, holding 15.35% of KROS shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.63% of its assets in Keros Therapeutics shares.

KROS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Keros Therapeutics	88.45%	2.50%	9.05%
Sector	Healthcare Stocks	488.17%	11.08%	-399.26%
Industry	Biotech Stocks	307.00%	11.11%	-218.12%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Fmr	5.54M	15.35%	$87.75M
Adar1 capital management	5.39M	13.27%	$71.95M
Blackrock	2.51M	8.53%	$114.86M
Blackrock funding, inc. /de	2.73M	6.73%	$36.48M
Vanguard group	1.96M	5.42%	$30.98M
Logos global management lp	2.00M	4.92%	$26.70M
State street	1.22M	4.15%	$55.82M
Nantahala capital management	1.62M	3.99%	$21.64M
Western standard	1.53M	3.78%	$20.49M
Tang capital management	1.42M	3.49%	$18.94M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Western standard	1.53M	11.40%	$20.49M
Adar1 capital management	5.39M	11.03%	$71.95M
Logos global management lp	2.00M	2.95%	$26.70M
Tang capital management	1.42M	0.96%	$18.94M
Nantahala capital management	1.62M	0.85%	$21.64M
Redmile group	552.51K	0.79%	$7.38M
Newtyn management	246.86K	0.50%	$3.30M
Dafna capital management	130.32K	0.48%	$1.74M
Tfg asset management gp	103.00K	0.40%	$1.63M
Orbimed advisors	1.02M	0.34%	$13.60M

Top Buyers

Holder	Shares	% Assets	Change
Adar1 capital management	5.39M	11.03%	3.90M
Western standard	1.53M	11.40%	1.40M
Fmr	5.54M	0.01%	644.17K
Blackrock	2.51M	0.00%	347.23K
Tang capital management	1.42M	0.96%	318.98K

Top Sellers

Holder	Shares	% Assets	Change
Braidwell lp	-	-	-1.89M
Darwin global management	-	-	-1.69M
Holocene advisors, lp	-	-	-1.20M
Jefferies financial group	-	-	-866.74K
Mangrove partners	-	-	-736.38K

New Positions

Holder	Shares	% Assets	Change	Value
Canada pension plan investment board	318.40K	0.00%	318.40K	$4.25M
Newtyn management	246.86K	0.50%	246.86K	$3.30M
Federated hermes	124.62K	0.00%	124.62K	$1.97M
Tfg asset management gp	103.00K	0.40%	103.00K	$1.63M
Norges bank	64.90K	0.00%	64.90K	$1.03M

Sold Out

Holder	Change
Ifp advisors	-1.00
Farther finance advisors	-1.00
Pnc financial services group	-4.00
Nelson, van denburg & campbell wealth management group	-4.00
Riggs asset managment	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	143	-13.86%	35,921,666	4.01%	88	1.22%	82	-14.58%	35	-7.89%
Mar 31, 2025	169	-2.87%	36,741,515	-0.02%	90	0.87%	98	-14.04%	38	22.58%
Dec 31, 2024	168	-1.75%	35,057,503	0.30%	97	1.04%	110	14.58%	30	-34.78%
Sep 30, 2024	170	11.11%	34,920,843	11.04%	96	1.27%	96	11.63%	46	15.00%
Jun 30, 2024	152	1.33%	31,449,861	0.28%	106	0.99%	85	-10.53%	40	8.11%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.07M	2.63%	-23.70K
Vanguard US Total Market Shares ETF	960.39K	2.37%	1.20K
Fidelity Select Health Care	820.00K	2.02%	20.00K
iShares Russell 2000 ETF	807.57K	1.99%	-15.33K
SPDR® S&P Biotech ETF	657.93K	1.62%	16.23K
Fidelity Advisor Health Care I	500.00K	1.23%	15.00K
Fidelity Small Cap Growth	467.94K	1.15%	91.10K
Strategic Advisers Fidelity US TtlStk	459.90K	1.14%	47.33K
Vanguard Explorer Inv	454.00K	1.12%	85.46K
Federated Hermes MDT SCC Institutional	450.87K	1.11%	-315.89K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Apr 09, 2025	ADAR1 Capital Management, LLC	-	Buy	$174.37K
Apr 09, 2025	ADAR1 Capital Management, LLC	-	Buy	$3.20M
Apr 09, 2025	ADAR1 Capital Management, LLC	-	Buy	$767.86K
Apr 09, 2025	ADAR1 Capital Management, LLC	-	Buy	$5.17M
Apr 09, 2025	ADAR1 Capital Management, LLC	-	Buy	$153.75K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	5	-
2025 Q1	-	-
2024 Q4	-	-
2024 Q3	-	4
2024 Q2	-	-

KROS Ownership FAQ

Who Owns Keros Therapeutics?

Keros Therapeutics shareholders are primarily institutional investors at 88.45%, followed by 2.50% insiders and 9.05% retail investors. The average institutional ownership in Keros Therapeutics's industry, Biotech Stocks , is 307.00%, which Keros Therapeutics falls below.

Who owns the most shares of Keros Therapeutics?

Keros Therapeutics’s largest shareholders are Fmr (5.54M shares, 15.35%), Adar1 capital management (5.39M shares, 13.27%), and Blackrock (2.51M shares, 8.53%). Together, they hold 37.16% of Keros Therapeutics’s total shares outstanding.

Does Blackrock own Keros Therapeutics?

Yes, BlackRock owns 8.53% of Keros Therapeutics, totaling 2.51M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 114.86M$. In the last quarter, BlackRock increased its holdings by 347.23K shares, a 16.03% change.

Who is Keros Therapeutics’s biggest shareholder by percentage of total assets invested?

Western standard is Keros Therapeutics’s biggest shareholder by percentage of total assets invested, with 11.40% of its assets in 1.53M Keros Therapeutics shares, valued at 20.49M$.

Who is the top mutual fund holder of Keros Therapeutics shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Keros Therapeutics shares, with 2.63% of its total shares outstanding invested in 1.07M Keros Therapeutics shares.

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