Keros Therapeutics KROS Institutional Ownership

NASDAQ KROS

$11.16 -0.02 (-0.18%)

As of: Oct 22, 2026 · 9:32 AM EDT

Institutions by Trading Activity

131 Institutions

Increased 60 45.8%

Unchanged 21 16.0%

Reduced 50 38.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

93.24%

▲+47.73 pp QoQ

Shares Held by Institutions

18.49Mn

of 19.83Mn outstanding

▼-0.59% QoQ

Shares Outstanding

19.83Mn

1.34Mn held outside 13F filers

Institutional Investors

131

filed 13F for Jun 2026

▼-19 vs prior quarter

Net Shares Added (QoQ)

-109.41K

distributed since last quarter

Value of Holdings

$210.74Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Keros Therapeutics, Inc. (NASDAQ:KROS) counted 131 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

These investors held 93.24% of outstanding shares in Q2 2026, up from 45.51% the quarter before.
Total shares held in KROS fell 0.59% from Q1 2026; the number of holders fell 2.96% from Q2 2025.
Of the 131 holders, 60 added to their positions, 50 reduced their stakes and 21 left their positions unchanged in Q2 2026.
The aggregate institutional position in Keros Therapeutics was 18.49Mn shares at the end of Q2 2026, down 109.41K from the prior quarter and down 16.41Mn from a year earlier.
As of June 30, 2026, the biggest holder of Keros Therapeutics was BlackRock, Inc. with 2.79Mn shares, or 14.09% of shares outstanding.
The largest position increases in KROS for Q2 2026 were by AQR Capital Management LLC (+561.3K shares), Mackenzie Financial Corp (+475.99K shares), BlackRock, Inc. (+382.42K shares), ADAR1 Capital Management, LLC (+149.5K shares) and Dimensional Fund Advisors LP (+139.18K shares).
Among holders that kept a stake in Keros Therapeutics, the biggest sellers in Q2 2026 were Arrowstreet Capital, Limited Partnership (-357.07K shares), D. E. Shaw & Co., Inc. (-242.15K shares), Geode Capital Management, LLC (-170.62K shares), Connor, Clark & Lunn Investment Management Ltd. (-130K shares) and Two Sigma Investments, LP (-117.19K shares).
Business Quant data shows the 10 biggest positions in Keros Therapeutics as of Q2 2026 were held by BlackRock, Inc. (2.79Mn shares), Nantahala Capital Management, LLC (1.41Mn shares), AQR Capital Management LLC (967.86K shares), Vanguard Capital Management LLC (833.6K shares), OrbiMed Advisors LLC (759.15K shares), Federated Hermes, Inc. (700.43K shares), Vanguard Portfolio Management LLC (652.63K shares), Mackenzie Financial Corp (628.44K shares), Madison Avenue Partners, LP (626.58K shares) and Qube Research & Technologies Ltd (608.84K shares).

Form 13F Holdings

131 Institutional Holders

Report period 30 Jun, 2026

Total shares held 18.49Mn

Of outstanding 93.24%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	2,794,217	14.09%	▲382,424	+15.86%	$29.90Mn
2	Nantahala Capital Management, LLC	0001472322	1,410,419	7.11%	▲50,000	+3.68%	$15.09Mn
3	AQR CAPITAL MANAGEMENT LLC	0001167557	967,859	4.88%	▲561,296	+138.06%	$10.36Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	833,596	4.20%	▲2,175	+0.26%	$8.92Mn
5	ORBIMED ADVISORS LLC	0001055951	759,155	3.83%	0	0.00%	$8.12Mn
6	Federated Hermes, Inc.	0001056288	700,427	3.53%	▲11,198	+1.62%	$7.49Mn
7	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	652,635	3.29%	▼29,408	-4.31%	$6.98Mn
8	MACKENZIE FINANCIAL CORP	0000919859	628,438	3.17%	▲475,988	+312.23%	$6.72Mn
9	Madison Avenue Partners, LP	0001801265	626,583	3.16%	0	0.00%	$6.70Mn
10	Qube Research & Technologies Ltd	0001729829	608,837	3.07%	▼116,089	-16.01%	$6.51Mn
11	JACOBS LEVY EQUITY MANAGEMENT, INC	0000884414	605,445	3.05%	▼100,626	-14.25%	$6.48Mn
12	State Street Corp	0000093751	541,193	2.73%	▼20,537	-3.66%	$5.79Mn
13	GEODE CAPITAL MANAGEMENT, LLC	0001214717	510,841	2.58%	▼170,619	-25.04%	$5.47Mn
14	DIMENSIONAL FUND ADVISORS LP	0000354204	460,541	2.32%	▲139,181	+43.31%	$4.93Mn
15	CITADEL ADVISORS LLC	0001423053	396,098	2.00%	▼10,568	-2.60%	$4.24Mn
16	RENAISSANCE TECHNOLOGIES LLC	0001037389	359,086	1.81%	▼94,396	-20.82%	$3.84Mn
17	D. E. Shaw & Co., Inc.	0001009207	267,460	1.35%	▼242,148	-47.52%	$2.86Mn
18	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	265,017	1.34%	▲70,000	+35.89%	$2.84Mn
19	Nuveen, LLC	0001871926	247,756	1.25%	▼14,319	-5.46%	$2.65Mn
20	ADAR1 Capital Management, LLC	0001940272	246,818	1.24%	▲149,500	+153.62%	$2.64Mn

Showing 1 to 20 of 131 holders