KROS · Keros Therapeutics, Inc. · Holdings

$11.95 +0.31 (+2.66%) At close · Oct 9

Russell 2000 member Rebalance outlook locked

Market Cap

$236.93M

19.83M

Volume · Oct 9 194.39K Avg daily vol (3M) 194.1K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 132

Total Value: $198,683,058

Total Shares: 18,568,505

Showing 1–100 of 133 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 132 13F filers

Top Holder

15.0%

of institutional value

Top 5

36.4%

of institutional value

Top 10

53.8%

of institutional value

HHI

473

Broadly held

Showing 100 of 133

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$29,898,117

15.05%

2,794,217

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	260,787	$2,790,420	9.3%	Sole
BlackRock Asset Management Canada Ltd	229	$2,450	0.0%	Sole
BlackRock Investment Management, LLC	76,309	$816,506	2.7%	Sole
BLACKROCK ADVISORS LLC	389,293	$4,165,435	13.9%	Sole
BlackRock Fund Advisors	969,309	$10,371,606	34.7%	Sole
BlackRock Institutional Trust Company, N.A.	1,009,982	$10,806,807	36.1%	Sole
BlackRock Japan Co. Ltd	12,147	$129,972	0.4%	Sole
BlackRock Investment Management (UK) Ltd.	38,562	$412,613	1.4%	Sole
BlackRock Asset Management Ireland Ltd	28,827	$308,448	1.0%	Sole
Aperio Group, LLC	8,772	$93,860	0.3%	Sole

Nantahala Capital Management, LLC

$15,091,483

7.60%

1,410,419

AQR CAPITAL MANAGEMENT LLC

$10,356,088

5.21%

967,859

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RF&L WEALTH MANAGEMENT, LLC	11	$117	0.0%	Other
Prism Planning Partners LLC	268	$2,867	0.0%	Other
Compound Planning, Inc.	8	$85	0.0%	Other
Arax Advisory Partners	9,209	$98,536	1.0%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	1,850	$19,795	0.2%	Other
Stokes Family Office, LLC	436	$4,665	0.0%	Other
Held directly	956,077	$10,230,023	98.8%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$8,919,477

4.49%

833,596

ORBIMED ADVISORS LLC

$8,122,958

4.09%

759,155

FEDERATED HERMES, INC.

$7,494,568

3.77%

700,427

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FEDERATED EQUITY MANAGEMENT CO OF PENNSYLVANIA	25,061	$268,152	3.6%	Defined
FEDERATED MDTA LLC	675,366	$7,226,416	96.4%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$6,983,194

3.51%

652,635

MACKENZIE FINANCIAL CORP

$6,724,286

3.38%

628,438

Madison Avenue Partners, LP

$6,704,438

3.37%

626,583

Qube Research & Technologies Ltd

$6,514,555

3.28%

608,837

JACOBS LEVY EQUITY MANAGEMENT, INC

$6,478,261

3.26%

605,445

STATE STREET CORP

$5,790,765

2.91%

541,193

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	541,193	$5,790,765	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$5,465,998

2.75%

510,841

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	72,278	$773,374	14.1%	Defined
Held directly	438,563	$4,692,624	85.9%	Defined

DIMENSIONAL FUND ADVISORS LP

$4,927,786

2.48%

460,541

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	2,177	$23,293	0.5%	Defined
DFA Australia Ltd.	6,588	$70,491	1.4%	Defined
Dimensional Ireland Ltd	28,752	$307,646	6.2%	Defined
Held directly	423,024	$4,526,356	91.9%	Sole

CITADEL ADVISORS LLC

$4,238,248

2.13%

396,098

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	106,805	$1,142,813	27.0%	Defined
Held directly	289,293	$3,095,435	73.0%	Defined

RENAISSANCE TECHNOLOGIES LLC

$3,842,220

1.93%

359,086

D. E. Shaw & Co., Inc.

$2,861,821

1.44%

267,460

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	231,329	$2,475,220	86.5%	Defined
D. E. Shaw Investment Management, L.L.C. joint	36,131	$386,601	13.5%	Defined

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$2,835,681

1.43%

265,017

Nuveen, LLC

$2,650,989

1.33%

247,756

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	1,630	$17,441	0.7%	Defined
TEACHERS ADVISORS, LLC joint	246,126	$2,633,548	99.3%	Defined

ADAR1 Capital Management, LLC

$2,640,952

1.33%

246,818

TWO SIGMA INVESTMENTS, LP

$2,639,144

1.33%

246,649

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$2,494,972

1.26%

233,175

MILLENNIUM MANAGEMENT LLC

$1,977,595

1.00%

184,822

GOLDMAN SACHS GROUP INC

$1,902,951

0.96%

177,846

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	88,058	$942,220	49.5%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	89,788	$960,731	50.5%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$1,698,218

0.85%

158,712

Man Group plc

$1,664,288

0.84%

155,541

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Numeric Investors LLC	155,541	$1,664,288	100.0%	Defined

WELLS FARGO & COMPANY/MN

$1,663,636

0.84%

155,480

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	15,480	$165,636	10.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	140,000	$1,498,000	90.0%	Defined

NORTHERN TRUST CORP

$1,646,119

0.83%

153,843

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	150,948	$1,615,143	98.1%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	2,895	$30,976	1.9%	Other

BESSEMER GROUP INC

$1,539,227

0.77%

143,853

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BESSEMER TRUST Co NATIONAL ASSOCIATION	143,853	$1,539,227	100.0%	Defined

Empowered Funds, LLC

$1,521,014

0.77%

142,151

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Bridgeway Capital Management, LLC	125,517	$1,343,031	88.3%	Other
Sequoia Financial Group, LLC	16,634	$177,983	11.7%	Other

UBS Group AG

$1,476,460

0.74%

137,987

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	115	$1,230	0.1%	Defined
UBS AG	137,872	$1,475,230	99.9%	Defined

VANGUARD FIDUCIARY TRUST CO

$1,405,059

0.71%

131,314

Connor, Clark & Lunn Investment Management Ltd.

$1,368,369

0.69%

127,885

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	127,885	$1,368,369	100.0%	Sole

O'SHAUGHNESSY ASSET MANAGEMENT, LLC

$1,352,255

0.68%

126,379

ACADIAN ASSET MANAGEMENT LLC

$1,237,112

0.62%

115,618

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	115,618	$1,237,112	100.0%	Defined

JANE STREET GROUP, LLC

$1,233,356

0.62%

115,267

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	54,538	$583,556	47.3%	Defined
Jane Street Global Trading, LLC	60,729	$649,800	52.7%	Defined

Bank of New York Mellon Corp

$1,105,725

0.56%

103,339

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	60,455	$646,868	58.5%	Defined
The Bank of New York Mellon	41,505	$444,103	40.2%	Defined
BNY Mellon, NA joint	1,377	$14,733	1.3%	Defined
Held directly	2	$21	0.0%	Defined

AMERIPRISE FINANCIAL INC

$1,084,359

0.55%

101,342

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	101,342	$1,084,359	100.0%	Defined

AMERICAN CENTURY COMPANIES INC

$906,076

0.46%

84,680

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	84,680	$906,076	100.0%	Defined

LOS ANGELES CAPITAL MANAGEMENT LLC

$902,780

0.45%

84,372

MORGAN STANLEY

$848,358

0.43%

79,286

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	1,620	$17,334	2.0%	Defined
MORGAN STANLEY & CO. LLC	7,595	$81,266	9.6%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	49,613	$530,859	62.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	1,823	$19,506	2.3%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	18,635	$199,393	23.5%	Defined

Invesco Ltd.

$765,723

0.39%

71,563

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	2,247	$24,042	3.1%	Defined
Invesco Trust Co joint	7,586	$81,170	10.6%	Defined
Invesco Capital Management LLC	61,730	$660,511	86.3%	Defined

HSBC HOLDINGS PLC

$748,208

0.38%

69,926

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
HSBC BANK PLC	69,926	$748,208	100.0%	Defined

MARTINGALE ASSET MANAGEMENT L P

$725,417

0.37%

67,796

PRINCIPAL FINANCIAL GROUP INC

$682,734

0.34%

63,807

RBF Capital, LLC

$671,960

0.34%

62,800

Russell Investments Group, Ltd.

$651,539

0.33%

60,892

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC joint	32,112	$343,596	52.7%	Defined
Russell Investments Capital, LLC joint	8,476	$90,692	13.9%	Defined
Russell Investments France SAS	3,677	$39,343	6.0%	Defined
Russell Investments Trust Company joint	16,627	$177,908	27.3%	Other

XTX Topco Ltd

$636,981

0.32%

59,531

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	59,531	$636,981	100.0%	Defined

Jain Global LLC

$633,536

0.32%

59,209

PRICE T ROWE ASSOCIATES INC /MD/

$600,494

0.30%

56,121

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	56,121	$600,494	100.0%	Defined

PANAGORA ASSET MANAGEMENT INC

$599,039

0.30%

55,985

IEQ CAPITAL, LLC

$595,722

0.30%

55,675

Rangeley Capital, LLC

$582,080

0.29%

54,400

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO

$538,466

0.27%

50,324

BNP PARIBAS ARBITRAGE, SA

$533,405

0.27%

49,851

BARCLAYS PLC

$531,832

0.27%

49,704

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	47,624	$509,576	95.8%	Defined
BARCLAYS CAPITAL INC.	2,080	$22,256	4.2%	Defined

Y-Intercept (Hong Kong) Ltd

$515,483

0.26%

48,176

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

$504,194

0.25%

47,121

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MFS Heritage Trust CO	7,973	$85,311	16.9%	Defined
Held directly	39,148	$418,883	83.1%	Sole

DEUTSCHE BANK AG\

$500,781

0.25%

46,802

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	46,802	$500,781	100.0%	Defined

Susquehanna Portfolio Strategies, LLC

$479,616

0.24%

44,824

Mariner, LLC

$416,176

0.21%

38,895

FMR LLC

$378,009

0.19%

35,328

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	35,328	$378,009	100.0%	Defined

PRELUDE CAPITAL MANAGEMENT, LLC

$374,917

0.19%

35,039

MARSHALL WACE, LLP

$370,220

0.19%

34,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	34,600	$370,220	100.0%	Other

ALLIANCEBERNSTEIN L.P.

$355,240

0.18%

33,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	33,200	$355,240	100.0%	Defined

RHUMBLINE ADVISERS

$350,478

0.18%

32,755

BANK OF AMERICA CORP /DE/

$334,161

0.17%

31,230

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	31,230	$334,161	100.0%	Defined

Squarepoint Ops LLC

$333,882

0.17%

31,204

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	31,204	$333,882	100.0%	Defined

MERCER GLOBAL ADVISORS INC /ADV

$296,218

0.15%

27,684

Quantinno Capital Management LP

$288,589

0.15%

26,971

CANADA PENSION PLAN INVESTMENT BOARD

$247,170

0.12%

23,100

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$225,160

0.11%

21,043

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	21,043	$225,160	100.0%	Other

Cerity Partners LLC

$195,820

0.10%

18,301

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$190,898

0.10%

17,841

Creative Planning

$178,775

0.09%

16,708

MetLife Investment Management, LLC

$178,497

0.09%

16,682

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	16,682	$178,497	100.0%	Defined

Jump Financial, LLC

$164,780

0.08%

15,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Leap GP LLC joint	15,400	$164,780	100.0%	Defined

EJF Capital LP

$160,500

0.08%

15,000

JPMORGAN CHASE & CO

$156,476

0.08%

14,624

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	7,663	$81,994	52.4%	Defined
J.P. Morgan Investment Management Inc.	20	$214	0.1%	Defined
J.P. Morgan Markets Ltd	6,941	$74,268	47.5%	Defined

CITADEL ADVISORS LLC

$154,080

0.08%

14,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	14,400	$154,080	100.0%	Defined

nVerses Capital, LLC

$140,426

0.07%

13,124

Engineers Gate Manager LP

$130,700

0.07%

12,215

PDT Partners, LLC

$122,033

0.06%

11,405

Point72 Asset Management, L.P.

$111,205

0.06%

10,393

AMERICAN FINANCIAL GROUP INC

$108,123

0.05%

10,105

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Great American Insurance Company	10,105	$108,123	100.0%	Defined

Arax Advisory Partners

$107,502

0.05%

10,047

NEW YORK STATE COMMON RETIREMENT FUND

$97,541

0.05%

9,116

CITIGROUP INC

$96,459

0.05%

9,015

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	9,015	$96,459	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$91,067

0.05%

8,511

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	8,511	$91,067	100.0%	Defined

Legal & General Group Plc

$89,986

0.05%

8,410

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	1,939	$20,747	23.1%	Defined
Legal & General Investment Management Ltd	6,471	$69,239	76.9%	Defined

Vanguard Global Advisers, LLC

$85,011

0.04%

7,945

Police & Firemen's Retirement System of New Jersey

$82,390

0.04%

7,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	7,700	$82,390	100.0%	Defined

NISA INVESTMENT ADVISORS, LLC

$42,682

0.02%

3,989

ROYAL BANK OF CANADA

$33,961

0.02%

3,174

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	574	$6,141	18.1%	Defined
RBC Capital Markets, LLC	2,600	$27,820	81.9%	Defined

China Universal Asset Management Co., Ltd.

$33,705

0.02%

3,150

IFP Advisors, Inc

$32,239

0.02%

3,013

Ameritas Investment Partners, Inc.

$25,380

0.01%

2,372

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	2,372	$25,380	100.0%	Other

OSAIC HOLDINGS, INC.

$21,966

0.01%

2,053

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	2,002	$21,421	97.5%	Defined
Osaic Advisory Services, LLC	51	$545	2.5%	Defined

Tower Research Capital LLC (TRC)

$21,036

0.01%

1,966

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	1,966	$21,036	100.0%	Defined

Zurcher Kantonalbank (Zurich Cantonalbank)

$15,140

0.01%

1,415

Key facts CIK 1664710 CUSIP 492327101 13F (30d) 4 filings 4 filers Visit website Investor relations