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Disclosery

KROS KEROS THERAPEUTICS INC

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Stock (common), issuer CIK 1664710

163 managers (166 13F filers) reported a position in KROS shares at 2025-12-31, 20,074,581 shares in all. 37 filers opened a position and 26 filers sold out during the quarter.

Managers
163
13F filers
166
New
37
Added
39
Reduced
73
Sold out
26
Shares held by filers
20,074,581

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.2,290,532$46.6M<0.01%-426,62113F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,525,355$31.1M<0.01%-1,193,42213F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …1,334,516$27.2M0.02%+1,075,76213F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,075,993$21.9M<0.01%-226,98513F-HRTimelineGroup
Madison Avenue Partners, LP823,707$16.8M0.72%-1,884,51113F-HRTimeline
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC804,212$16.4M0.34%-214,52213F-HRTimelineGroup
Qube Research & Technologies Ltd783,918$16M0.02%+480,79613F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC768,425$15.6M0.06%+161,33613F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.755,473$15.4M0.01%-575,95213F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.654,724$13.3M0.02%+140,56413F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC635,208$12.9M<0.01%-202,15513F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC591,686$12M0.02%+436,98613F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC590,517$12M<0.01%-734,96613F-HR/ATimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding490,239$9.98M+353,516Timeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC472,520$9.62M0.01%+296,37613F-HRTimelineGroup
Nantahala Capital Management, LLCin group Nantahala Capital Management,…360,419$7.34M0.44%-872,77013F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…321,346$6.54M0.02%-13,80813F-HRTimeline
HRT FINANCIAL LP260,891$5.31M0.02%+218,09213F-HRTimeline
Weiss Asset Management LPin group Weiss Asset Management LP254,063$5.17M0.07%new13F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
NORTHERN TRUST CORPin group NORTHERN TRUST CORP250,571$5.1M<0.01%-82,18713F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY230,492$4.69M<0.01%-164,61113F-HR/ATimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC220,209$4.48M<0.01%+166,86313F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\195,281$3.98M<0.01%+172,02213F-HRTimelineGroup
ALGERT GLOBAL LLC193,607$3.94M0.06%+145,82813F-HR/ATimeline
Man Group plcin group Man Group plc190,207$3.87M0.01%-2,64713F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co186,779$3.8M<0.01%-105,22713F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC180,543$3.68M<0.01%-23,80813F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC162,009$3.3M<0.01%-44613F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC161,136$3.28M0.04%new13F-HRTimelineGroup
NOMURA HOLDINGS INCin group NOMURA ASSET MANAGEMENT CO LTD156,753$3.19M0.01%new13F-HRTimelineGroup
BESSEMER GROUP INCin group BESSEMER GROUP INC143,853$2.93M<0.01%new13F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC122,828$2.5M<0.01%+2,39513F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC122,821$2.5M0.01%+92,36013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp121,582$2.48M<0.01%+10,70013F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd117,361$2.39M0.05%+68,81613F-HRTimeline
PDT Partners, LLC112,183$2.28M0.15%-220,63213F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/100,114$2.04M<0.01%-126,01313F-HRTimelineGroup
SG Americas Securities, LLC98,703$2.01M<0.01%+92,21213F-HRTimeline
UBS Group AGgroup of 2 filers holding97,318$1.98M-6,546Timeline
Rangeley Capital, LLC96,800$1.97M1.7%-161,81913F-HRTimeline
Invesco Ltd.in group Invesco Ltd.87,428$1.78M<0.01%+12,44913F-HRTimelineGroup
RBF Capital, LLC81,724$1.66M0.08%-68,27613F-HR/ATimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…80,774$1.64M<0.01%-12,26513F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC74,726$1.52M<0.01%-24,37413F-HRTimelineGroup
Nuveen, LLCin group TIAA63,097$1.28M<0.01%-12,75813F-HRTimelineGroup
Engineers Gate Manager LP62,369$1.27M0.02%+36,00013F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC60,078$1.22M0.03%new13F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP58,013$1.18M<0.01%+22,05513F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP51,346$1.04M0.09%+26,04613F-HRTimeline
MACKENZIE FINANCIAL CORP51,385$1.04M<0.01%-5,38313F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…50,324$1.02M<0.01%+8,87113F-HRTimeline
RHUMBLINE ADVISERS44,235$901K<0.01%-6,24313F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD44,100$898K<0.01%-183,20013F-HRTimeline
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…43,695$890K<0.01%new13F-HRTimelineGroup
HUSSMAN STRATEGIC ADVISORS, INC.42,000$855K0.21%new13F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P39,379$802K0.02%+20213F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.38,848$791K<0.01%new13F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC36,640$746K<0.01%-2,52613F-HRTimelineGroup
FMR LLCin group FMR LLC35,597$725K<0.01%-64,93413F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN32,762$667K<0.01%+6,87213F-HRTimelineGroup
AlphaQuest LLC32,090$653K0.04%+16,84113F-HRTimeline
Cambria Investment Management, L.P.31,312$638K0.04%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.30,860$628K<0.01%+3,05013F-HRTimeline
Rafferty Asset Management, LLC30,280$617K<0.01%-13,78613F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/29,699$605K<0.01%-20,28213F-HRTimeline
Caption Management, LLC29,500$601K0.03%-6,57813F-HRTimeline
STRS OHIO29,300$597K<0.01%+1,10013F-HRTimeline
TUDOR INVESTMENT CORP ET AL28,307$576K<0.01%+8,78213F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources27,582$562K<0.01%-60,17613F-HRTimelineGroup
DekaBank Deutsche Girozentrale7,550$531K<0.01%013F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.25,680$523K0.08%new13F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC33,771$508K<0.01%-3,23213F-HRTimeline
Brooklyn Investment Group23,750$490K0.02%new13F-HRTimeline
Creative Planningin group Creative Planning23,131$471K<0.01%-3,44213F-HRTimelineGroup
LSV ASSET MANAGEMENT23,100$470K<0.01%new13F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd21,590$440K0.02%new13F-HRTimelineGroup
OXFORD ASSET MANAGEMENT LLP21,510$438K0.16%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Quantinno Capital Management LP21,120$430K<0.01%-1113F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD19,835$404K<0.01%-2,38913F-HRTimeline
Quantedge Capital Pte Ltd19,292$393K0.19%new13F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC18,851$384K0.03%-5,370,41313F-HR/ATimelineGroup
Penserra Capital Management LLCin group Penserra Capital Management L…18,839$383K<0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO18,638$379K<0.01%-153,30313F-HRTimelineGroup
Entropy Technologies, LP17,891$364K0.02%new13F-HRTimeline
Campbell & CO Investment Adviser LLC17,630$359K0.02%new13F-HRTimeline
Polymer Capital Management (US) LLC17,495$356K0.05%+6,34713F-HRTimeline
Legato Capital Management LLC16,974$346K0.03%new13F-HRTimeline
Integrated Quantitative Investments LLC16,974$346K0.07%new13F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding16,797$342K-2,914Timeline
MetLife Investment Management, LLCin group MetLife Investment Management…16,682$340K<0.01%-3,06713F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC15,211$310K<0.01%-49713F-HRTimelineGroup
EJF Capital LP15,000$305K0.17%new13F-HRTimeline
Abacus Wealth Partners, LLC14,109$287K0.03%new13F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC13,639$278K0.02%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…13,389$273K<0.01%-203,31113F-HRTimelineGroup
ExodusPoint Capital Management, LP13,360$272K<0.01%-9,61513F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC13,265$270K<0.01%-3,40813F-HRTimeline
VARCOV Co.12,810$261K0.1%13F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…12,367$252K0.07%+4,02513F-HRTimelineGroup
PROFUND ADVISORS LLC11,483$234K0.01%new13F-HRTimeline
Cornerstone Investment Partners, LLC11,150$227K0.01%+713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND10,616$216K<0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd10,424$212K0.01%new13F-HRTimelineGroup
AMERICAN FINANCIAL GROUP INCin group AMERICAN FINANCIAL GROUP INC10,105$206K0.07%013F-HRTimelineGroup
EQUITEC PROPRIETARY MARKETS, LLC8,600$175K0.84%new13F-HRTimeline
Police & Firemen's Retirement System of…7,700$157K<0.01%-1,77013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC7,109$145K<0.01%+4,19213F-HRTimelineGroup
Sterling Capital Management LLC7,024$143K<0.01%+4,69413F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,678$116K<0.01%-8713F-HRTimelineGroup
China Universal Asset Management Co., L…4,964$101K0.01%-2,15513F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS4,314$87.8K<0.01%-64,34213F-HRTimelineGroup
CWM, LLCin group CWM, LLC3,832$78K<0.01%-3,43913F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC2,676$54.5K<0.01%013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc2,621$53.4K<0.01%-49613F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,396$48.8K<0.01%+1,96613F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,372$48.3K<0.01%-51513F-HRTimelineGroup
SIGNATUREFD, LLC1,962$39.9K<0.01%+31113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,838$37.4K<0.01%-28513F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,799$36.6K<0.01%-30113F-HRTimeline
Caitong International Asset Management …1,624$33.1K0.01%+1,16613F-HR/ATimeline
Financial Management Professionals, Inc.1,443$29.4K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP1,396$28.4K<0.01%new13F-HRTimelineGroup
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC1,000$20.4K<0.01%new13F-HRTimelineGroup
AMALGAMATED BANK918$19K<0.01%-14013F-HRTimeline
Farther Finance Advisors, LLC622$12.7K<0.01%-2,35213F-HRTimeline
Allworth Financial LP608$12.4K<0.01%-5413F-HRTimeline
GF FUND MANAGEMENT CO. LTD.598$12.2K<0.01%-27213F-HRTimeline
Pinnacle Wealth Planning Services, Inc.541$11K<0.01%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\534$10.9K<0.01%013F-HRTimelineGroup
Private Wealth Asset Management, LLC500$10.2K<0.01%new13F-HRTimeline
Smartleaf Asset Management LLC394$7.99K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…317$6.45K<0.01%-11713F-HRTimelineGroup
GAMMA Investing LLC314$6.39K<0.01%-4713F-HRTimeline
QUADRANT CAPITAL GROUP LLC251$5.11K<0.01%013F-HRTimeline
Larson Financial Group LLC245$4.99K<0.01%-4913F-HRTimeline
Sachetta, LLC244$4.97K<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…203$4.13K<0.01%-3713F-HRTimelineGroup
Essential Partners LLC183$3.73K<0.01%-75913F-HRTimeline
WHITTIER TRUST CO200$3.56K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.169$3.44K<0.01%-4313F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC164$3.34K<0.01%-1113F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.133$3K<0.01%013F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…126$2.56K<0.01%new13F-HR/ATimelineGroup
IFP Advisors, Inc81$1.65K<0.01%+5213F-HRTimeline
True Wealth Design, LLC72$1.47K<0.01%+5313F-HRTimeline
Red Tortoise LLC56$1.14K<0.01%-9013F-HRTimeline
Parkside Financial Bank & Trust55$1.12K<0.01%013F-HRTimeline
Capital Advisors, Ltd. LLC30$1K<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…46$937<0.01%new13F-HR/ATimelineGroup
Cornerstone Financial Management LLC44$896<0.01%13F-HR/ATimeline
Private Wealth Management Group, LLC39$795<0.01%-6313F-HRTimeline
Basecamp Wealth Advisors LLC33$672<0.01%13F-HRTimeline
Global Retirement Partners, LLC29$590<0.01%new13F-HRTimeline
WPG Advisers, LLC24$489<0.01%013F-HRTimeline
Arax Advisory Partners16$326<0.01%-5,41913F-HRTimeline
Torren Management, LLC11$224<0.01%13F-HRTimeline
Sunbelt Securities, Inc.10$204<0.01%+313F-HRTimeline
SJS Investment Consulting Inc.4$82<0.01%new13F-HRTimeline
Clearstead Advisors, LLC3$62<0.01%-19713F-HRTimeline
SBI Securities Co., Ltd.2$41<0.01%-78113F-HRTimeline
Quantbot Technologies LP1$20<0.01%-38513F-HRTimeline
Avion Wealth36$00%013F-HRTimelineValue filed as zero, left out of ratios.
Covestor Ltd5$00%-3,50213F-HRTimelineValue filed as zero, left out of ratios.