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Disclosery

KROS KEROS THERAPEUTICS INC

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Stock (common), issuer CIK 1664710

146 managers (151 13F filers) reported a position in KROS shares at 2026-03-31, 18,595,324 shares in all. 22 filers opened a position and 40 filers sold out during the quarter.

Managers
146
13F filers
151
New
22
Added
48
Reduced
55
Sold out
40
Shares held by filers
18,595,324

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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.2,411,793$26.6M<0.01%+121,26113F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding1,656,521$18.3MnewTimeline
Nantahala Capital Management, LLCin group Nantahala Capital Management,…1,360,419$15M0.94%+1,000,00013F-HRTimelineGroup
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC759,155$8.38M0.18%-45,05713F-HRTimelineGroup
Qube Research & Technologies Ltd724,926$8M0.01%-58,99213F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC706,071$7.8M0.03%-62,35413F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.689,229$7.61M0.01%+34,50513F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC681,460$7.52M<0.01%+46,25213F-HRTimelineGroup
Madison Avenue Partners, LP626,583$6.92M0.3%-197,12413F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …590,249$6.52M<0.01%-744,26713F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP561,730$6.2M<0.01%-514,26313F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.509,608$5.63M<0.01%-245,86513F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC453,482$5.01M0.01%-138,20413F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC406,666$4.49M<0.01%-65,85413F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC406,563$4.49M<0.01%+226,02013F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP363,835$4.02M<0.01%+45,39613F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP321,360$3.55M<0.01%+263,34713F-HRTimelineGroup
Nuveen, LLCin group TIAA262,075$2.89M<0.01%+198,97813F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…257,884$2.85M0.01%-63,46213F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP254,187$2.81M<0.01%+3,61613F-HRTimelineGroup
Man Group plcin group Man Group plc238,618$2.63M0.01%+48,41113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC224,479$2.48M<0.01%-366,03813F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC195,017$2.15M0.04%+134,93913F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co179,952$1.99M<0.01%-6,82713F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC172,196$1.9M0.01%+138,42513F-HRTimeline
Y-Intercept (Hong Kong) Ltd164,483$1.82M0.03%+47,12213F-HRTimeline
MACKENZIE FINANCIAL CORP152,450$1.68M<0.01%+101,06513F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN151,040$1.67M<0.01%+118,27813F-HR/ATimelineGroup
UBS Group AGgroup of 2 filers holding146,939$1.62M+49,621Timeline
Empowered Funds, LLC145,517$1.61M0.01%new13F-HR/ATimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC143,853$1.59M<0.01%013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY124,112$1.37M<0.01%-106,38013F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp120,944$1.34M<0.01%-63813F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.109,015$1.2M<0.01%+70,16713F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC106,858$1.18M<0.01%-113,35113F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC102,479$1.13M<0.01%-20,34913F-HR/ATimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC97,318$1.07M0.06%+78,46713F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd88,322$975K0.02%+77,89813F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.87,772$969K<0.01%+34413F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…81,311$898K<0.01%+53713F-HRTimelineGroup
HRT FINANCIAL LP77,002$850K<0.01%-183,88913F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC65,436$721K<0.01%new13F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC64,260$709K<0.01%+27,62013F-HRTimelineGroup
RBF Capital, LLC62,800$693K0.03%-18,92413F-HR/ATimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC59,594$658K<0.01%new13F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.30,860$628K<0.01%013F-HRTimeline
Rangeley Capital, LLC54,400$601K0.65%-42,40013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC53,986$599K<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/53,654$592K<0.01%-46,46013F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\50,765$560K<0.01%-144,51613F-HRTimelineGroup
STRS OHIO50,600$559K<0.01%+21,30013F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC50,393$556K0.01%-110,74313F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…50,324$556K<0.01%013F-HRTimeline
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…48,998$541K<0.01%+5,30313F-HRTimelineGroup
MARTINGALE ASSET MANAGEMENT L P47,596$525K0.01%+8,21713F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC46,039$508K0.04%+32,40013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/45,876$507K<0.01%+16,17713F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC44,457$491K<0.01%-117,55213F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD44,100$487K<0.01%013F-HRTimeline
RHUMBLINE ADVISERS40,176$444K<0.01%-4,05913F-HRTimeline
GLOBEFLEX CAPITAL L P37,873$418K0.06%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO37,680$402K<0.01%+19,04213F-HR/ATimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd36,433$402K0.01%+14,84313F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC34,656$383K<0.01%-88,16513F-HRTimeline
AVIVA PLCin group AVIVA PLC34,307$379K<0.01%new13F-HRTimelineGroup
PDT Partners, LLC32,744$361K0.02%-79,43913F-HRTimeline
FMR LLCin group FMR LLC32,674$361K<0.01%-2,92313F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC30,085$332K<0.01%new13F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL28,007$309K<0.01%-30013F-HRTimeline
Quantinno Capital Management LP23,759$262K<0.01%+2,63913F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC23,157$256K<0.01%-51,56913F-HRTimelineGroup
SIMPLEX TRADING, LLC22,288$246K0.01%new13F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.22,790$243K0.04%-2,89013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources21,756$240K<0.01%-5,82613F-HRTimelineGroup
LSV ASSET MANAGEMENT20,900$231K<0.01%-2,20013F-HRTimeline
Creative Planningin group Creative Planning17,807$197K<0.01%-5,32413F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…16,682$184K<0.01%013F-HRTimelineGroup
Engineers Gate Manager LP16,595$183K<0.01%-45,77413F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD15,932$176K<0.01%-3,90313F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding15,480$171K-1,317Timeline
EJF Capital LP15,000$166K0.12%013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…14,651$162K<0.01%new13F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC13,826$153K<0.01%-1,38513F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…12,676$140K0.04%+30913F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV11,742$130K<0.01%new13F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC11,705$129K<0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…11,242$124K<0.01%-2,14713F-HRTimelineGroup
OXFORD ASSET MANAGEMENT LLP11,153$123K0.05%-10,35713F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
AMERICAN FINANCIAL GROUP INCin group AMERICAN FINANCIAL GROUP INC10,105$112K0.04%013F-HRTimelineGroup
SG Americas Securities, LLC9,135$101K<0.01%-89,56813F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND9,116$101K<0.01%-1,50013F-HRTimeline
CWM, LLCin group CWM, LLC8,618$95.1K<0.01%+4,78613F-HRTimelineGroup
Police & Firemen's Retirement System of…7,700$85K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS6,904$76.2K<0.01%+2,59013F-HRTimelineGroup
China Universal Asset Management Co., L…5,406$59.7K<0.01%+44213F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA4,867$54K<0.01%-81113F-HRTimelineGroup
Sterling Capital Management LLC4,361$48.1K<0.01%-2,66313F-HRTimeline
IFP Advisors, Inc2,852$31.5K<0.01%+2,77113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,698$29.8K<0.01%+86013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc2,621$28.9K<0.01%013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,372$26.2K<0.01%013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC2,208$24.4K<0.01%-4,90113F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC2,189$24.2K<0.01%-48713F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,052$22.7K<0.01%-34413F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,581$17.5K<0.01%-21813F-HRTimeline
SIGNATUREFD, LLC1,280$14.1K<0.01%-68213F-HRTimeline
GROUP ONE TRADING LLC734$8.1K<0.01%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…699$7.72K<0.01%new13F-HRTimeline
GF FUND MANAGEMENT CO. LTD.677$7.47K<0.01%+7913F-HRTimeline
Pinnacle Wealth Planning Services, Inc.541$5.97K<0.01%013F-HRTimeline
Private Wealth Asset Management, LLC500$5.52K<0.01%013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…455$5.02K<0.01%+32913F-HRTimelineGroup
MAI Capital Management412$4.55K<0.01%new13F-HRTimeline
Arax Advisory Partners389$4.29K<0.01%+37313F-HRTimeline
Smartleaf Asset Management LLC394$4.21K<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…349$3.85K<0.01%+3213F-HRTimelineGroup
Allworth Financial LP287$3.17K<0.01%-32113F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.257$2.84K<0.01%+8813F-HR/ATimelineGroup
Sachetta, LLC244$2.69K<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…236$2.6K<0.01%+3313F-HR/ATimelineGroup
ROTHSCHILD INVESTMENT LLC230$2.54K<0.01%+6613F-HRTimeline
GAMMA Investing LLC221$2.44K<0.01%-9313F-HRTimeline
SUMMIT SECURITIES GROUP LLC153$1.69K<0.01%new13F-HRTimeline
Basecamp Wealth Advisors LLC141$1.56K<0.01%+10813F-HRTimeline
Essential Partners LLC131$1.45K<0.01%-5213F-HRTimeline
Advisory Services Network, LLC123$1.36K<0.01%new13F-HRTimeline
NATIXISin group Natixis Investment Managers100$1.1K<0.01%new13F-HRTimelineGroup
Owl Creek Wealth Partners LLC100$1.1K<0.01%13F-HRTimeline
Farther Finance Advisors, LLC86$1K<0.01%-53613F-HRTimeline
Covestor Ltd50$1K<0.01%+4513F-HRTimeline
Red Tortoise LLC56$618<0.01%013F-HRTimeline
Parkside Financial Bank & Trust55$608<0.01%013F-HRTimeline
Cornerstone Financial Management LLC44$486<0.01%013F-HR/ATimeline
Private Wealth Management Group, LLC39$431<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\35$386<0.01%-49913F-HRTimelineGroup
Versant Capital Management, Inc31$342<0.01%new13F-HRTimeline
WPG Advisers, LLC24$265<0.01%013F-HRTimeline
True Wealth Design, LLC15$166<0.01%-5713F-HRTimeline
JPL Wealth Management, LLC12$133<0.01%new13F-HR/ATimeline
SJS Investment Consulting Inc.8$89<0.01%+413F-HRTimeline
Keating Financial Advisory Services, In…5$55<0.01%new13F-HRTimeline
Sunbelt Securities, Inc.4$44<0.01%-613F-HRTimeline
SBI Securities Co., Ltd.2$22<0.01%013F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC2$22<0.01%new13F-HRTimeline
Hughes Financial Services, LLC1$11<0.01%new13F-HRTimeline
Capital Advisors, Ltd. LLC30$00%013F-HRTimelineValue filed as zero, left out of ratios.