Keros Therapeutics, Inc. (KROS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

37,557,447Shares Outstanding

1,863,189Shares held by institutions

$30,779,882Value of institutional holdings

93.10%Institutional ownership %

22.48%Shares Changed QoQ

165No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 159 institutional investors hold a position in Keros Therapeutics, Inc. (NASDAQ:KROS).

The collective stake of institutional investors in Keros Therapeutics moved to 48.5% in December 2025, a shift down from the 85.8% reported for September 2025.
The company experienced a -29.12% quarterly change in institutional shares held, alongside a decrease of 1.24% in total owners annually.
During the quarter, 78 institutions bought more Keros Therapeutics shares, 68 sold shares, and 13 of the 159 total investors held their position steady.
This class of investors decreased its holdings in Keros Therapeutics to 20.03Mn shares for the 13F-cycle ending December 2025, down by 8.23Mn shares quarter on quarter, and down 17.49Mn shares year over year.
The top institutional stake in Keros Therapeutics as of December 31, 2025 belongs to BlackRock, Inc., which owns 2.29Mn shares, or 5.54% of the company.
Among the most significant buyers of Keros Therapeutics during December 2025 were ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.08Mn), Qube Research & Technologies Ltd (480.80K), RENAISSANCE TECHNOLOGIES LLC (436.99K), CITADEL ADVISORS LLC (296.38K), Weiss Asset Management LP (254.06K).
Leading sellers of Keros Therapeutics stock in December 2025 included ADAR1 Capital Management, LLC (5.37Mn), Madison Avenue Partners, LP (1.88Mn), VANGUARD GROUP INC (1.19Mn), Nantahala Capital Management, LLC (872.77K), GOLDMAN SACHS GROUP INC (734.97K).
The top 10 institutional holders of Keros Therapeutics for the quarter ending December 2025 included BlackRock, Inc. (2.29Mn), VANGUARD GROUP INC (1.53Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.33Mn), STATE STREET CORP (1.08Mn), Madison Avenue Partners, LP (823.71K), ORBIMED ADVISORS LLC (804.21K), Qube Research & Technologies Ltd (783.92K), JACOBS LEVY EQUITY MANAGEMENT, INC (768.42K), D. E. Shaw & Co., Inc. (755.47K), FEDERATED HERMES, INC. (654.72K).

159 Institutional Holders

1,863,189 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	2,290,532	-426,621	-15.70%	$46,635,220.00
VANGUARD GROUP INC	31 Dec, 2025	1,525,355	-1,193,422	-43.90%	$31,056,228.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	1,334,516	1,075,762	415.75%	$27,170,746.00
STATE STREET CORP	31 Dec, 2025	1,075,993	-226,985	-17.42%	$21,907,217.00
Madison Avenue Partners, LP	31 Dec, 2025	823,707	-1,884,511	-69.58%	$16,770,675.00
ORBIMED ADVISORS LLC	31 Dec, 2025	804,212	-214,522	-21.06%	$16,373,756.00
Qube Research & Technologies Ltd	31 Dec, 2025	783,918	480,796	158.61%	$15,960,570.00
JACOBS LEVY EQUITY MANAGEMENT, INC	31 Dec, 2025	768,425	161,336	26.58%	$15,645,133.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	755,473	-575,952	-43.26%	$15,381,430.00
FEDERATED HERMES, INC.	31 Dec, 2025	654,724	140,564	27.34%	$13,330,180.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	635,208	-202,155	-24.14%	$12,935,496.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	591,686	436,986	282.47%	$12,046,727.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	590,517	-734,966	-55.45%	$12,022,926.00
CITADEL ADVISORS LLC	31 Dec, 2025	472,520	296,376	168.26%	$9,620,507.00
Nantahala Capital Management, LLC	31 Dec, 2025	360,419	-872,770	-70.77%	$7,338,131.00
Connor, Clark & Lunn Investment Management Ltd.	31 Dec, 2025	321,346	-13,808	-4.12%	$6,542,605.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	318,439	235,916	285.88%	$6,483,418.00
HRT FINANCIAL LP	31 Dec, 2025	260,891	218,092	509.57%	$5,311.00
Weiss Asset Management LP	31 Dec, 2025	254,063	254,063	0.00%	$5,172,723.00
NORTHERN TRUST CORP	31 Dec, 2025	250,571	-82,187	-24.70%	$5,101,626.00

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