Keros Therapeutics, Inc. (KROS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

4,635,483Shares held by institutions

$49,553,313Value of institutional holdings

86.58%Institutional ownership %

7.00%Shares Changed QoQ

136No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Keros Therapeutics, Inc. (NASDAQ:KROS) is held by 162 institutional investors per 13F filings through December 2025.

They owned 49.6% of outstanding stock in December 2025, down from 87.9% the prior quarter.
They decreased total shares held in KROS by -29.66% quarter over quarter, and investors in Keros Therapeutics increased 1.25% from a year ago.
Of these 162 holders, 79 added to their stakes in Keros Therapeutics, 70 trimmed positions, and 13 made no changes.
The aggregate institutional position in Keros Therapeutics amounted to 20.16Mn shares as of December 2025, down by 8.5Mn shares quarter on quarter, and down 18.32Mn shares year over year.
As of December 31, 2025, the biggest holder of Keros Therapeutics is BlackRock, Inc. at 2.29Mn shares, representing 5.64% of shares outstanding.
Leading buyers of Keros Therapeutics shares for the quarter ending December 2025 were ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.08Mn), Qube Research & Technologies Ltd (480.8K), RENAISSANCE TECHNOLOGIES LLC (436.99K), CITADEL ADVISORS LLC (296.38K), Weiss Asset Management LP (254.06K).
The biggest sellers of Keros Therapeutics for the quarter ending December 2025 included ADAR1 Capital Management, LLC (5.35Mn), Madison Avenue Partners, LP (1.88Mn), VANGUARD GROUP INC (1.19Mn), Nantahala Capital Management, LLC (872.77K), Goldman Sachs Group Inc (734.97K).
Per Business Quant, the top 10 investors in KROS for the quarter ending December 2025 include 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).

162 Institutional Holders

4,635,483 Total Shares Held

Rows:

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Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	-426,621	-15.70%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-1,193,422	-43.90%	$0.00
Madison Avenue Partners, LP	31 Dec, 2025	-1,884,511	-69.58%	$0.00
Barclays Plc	31 Dec, 2025	-84,388	-53.04%	$0.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	1,075,762	415.75%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	480,796	158.61%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	252	0.00%	$0.00
State Street Corp	31 Dec, 2025	-226,985	-17.42%	$0.00
Man Group plc	31 Dec, 2025	-2,647	-1.37%	$0.00
ORBIMED ADVISORS LLC	31 Dec, 2025	-214,522	-21.06%	$0.00
Jump Financial, LLC	31 Dec, 2025	161,136	0.00%	$0.00
JACOBS LEVY EQUITY MANAGEMENT, INC	31 Dec, 2025	161,336	26.58%	$0.00
Y-Intercept (Hong Kong) Ltd	31 Dec, 2025	68,816	141.76%	$0.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	-575,952	-43.26%	$0.00
UBS Group AG	31 Dec, 2025	-6,780	-6.53%	$0.00
Federated Hermes, Inc.	31 Dec, 2025	140,564	27.34%	$0.00
Russell Investments Group, Ltd.	31 Dec, 2025	-12,265	-13.18%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	-202,155	-24.14%	$0.00
Nuveen, LLC	31 Dec, 2025	-12,758	-16.82%	$0.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	436,986	282.47%	$0.00

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