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Disclosery

IRON DISC MEDICINE INC

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Stock (common), issuer CIK 1816736

152 managers (154 13F filers) reported a position in IRON shares at 2024-12-31, 26,576,605 shares in all. 30 filers opened a position and 15 filers sold out during the quarter.

Managers
152
13F filers
154
New
30
Added
50
Reduced
44
Sold out
15
Shares held by filers
26,576,605

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 2024

Filers in the available 13F reports with a share position at 2024-12-31, 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
Atlas Venture Life Science Advisors, LLC2,509,456$159M19.41%013F-HRTimeline
FMR LLCin group FMR LLC1,866,248$118M0.01%+1,459,43413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.1,859,732$118M<0.01%+8,57913F-HRTimelineGroup
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC1,785,571$113M2.35%013F-HRTimelineGroup
Frazier Life Sciences Management, L.P.1,754,834$111M4.62%013F-HRTimeline
Paradigm Biocapital Advisors LPin group Paradigm Biocapital Advisors …1,497,720$95M3.3%013F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,395,405$88.5M0.02%-444,82113F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/1,394,637$88.4M0.01%+262,69013F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson1,217,815$77.2M0.04%+467,98813F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC1,068,246$67.7M<0.01%+18,71613F-HRTimelineGroup
Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In…983,500$62.4M7.33%-812,23513F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP768,735$48.7M<0.01%-59,17513F-HRTimelineGroup
DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,…600,515$38.1M0.72%-422,75013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC591,271$37.5M0.03%+180,24713F-HRTimelineGroup
Saturn V Capital Management LP509,406$32.3M12.65%-1,63513F-HRTimeline
TCG Crossover Management, LLC486,957$30.9M3.02%013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC472,706$30M<0.01%-2,01313F-HRTimelineGroup
Woodline Partners LP396,600$25.1M0.17%+19,53813F-HRTimeline
ARMISTICE CAPITAL, LLC356,000$22.6M0.52%+196,00013F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…350,000$22.2M0.04%-200,00013F-HRTimelineGroup
MPM BIOIMPACT LLC346,401$22M3.12%+34,64013F-HRTimeline
Foresite Capital Management V, LLCin group Foresite Capital Management V…299,069$19M15.78%013F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC236,244$15M0.01%+16,23013F-HRTimeline
Logos Global Management LP200,000$12.7M1.48%-735,00013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP187,017$11.9M<0.01%+16,29913F-HRTimelineGroup
Checkpoint Capital L.P.185,000$11.7M5.97%+159,45713F-HRTimeline
Catalio Capital Management, LP179,815$11.4M2.49%13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC171,810$10.9M<0.01%+24413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co165,072$10.5M<0.01%+4,51813F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY150,024$9.51M<0.01%+80,08713F-HR/ATimelineGroup
Nantahala Capital Management, LLCin group Nantahala Capital Management,…150,000$9.51M0.67%013F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP139,720$8.86M<0.01%+86,15413F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…129,482$8.21M0.01%-28,06613F-HRTimelineGroup
Blue Owl Capital Holdings LP120,260$7.62M1.76%-55,00013F-HRTimeline
UBS Group AGgroup of 2 filers holding117,445$7.45M+65,704Timeline
SILVERARC CAPITAL MANAGEMENT, LLCin group SILVERARC CAPITAL MANAGEMENT,…110,381$7M1.56%+6,51913F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP91,490$5.64M0.01%-1,08913F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC88,002$5.58M<0.01%13F-HR/ATimelineGroup
RENAISSANCE TECHNOLOGIES LLC86,420$5.48M0.01%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.81,190$5.15M0.01%new13F-HRTimelineGroup
BAKER BROS. ADVISORS LPin group BAKER BROS. ADVISORS LP77,050$4.88M0.05%new13F-HRTimelineGroup
Sio Capital Management, LLC73,511$4.66M1.31%-114,43013F-HRTimeline
Exome Asset Management LLC69,072$4.38M3.29%+4,55613F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO61,017$3.87M<0.01%+44,76213F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp57,261$3.63M<0.01%+4,35613F-HRTimelineGroup
Patient Square Capital LP56,400$3.58M1.34%new13F-HRTimeline
Nuveen Asset Management, LLCin group TIAA50,121$3.18M<0.01%-44,68313F-HRTimelineGroup
TD Asset Management Inc44,932$2.85M<0.01%+4,20013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC42,635$2.7M<0.01%+27,75213F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC40,064$2.54M<0.01%-8113F-HR/ATimelineGroup
Ensign Peak Advisors, Inc40,000$2.54M<0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …38,459$2.44M<0.01%+9,39413F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/35,345$2.24M<0.01%-34,74713F-HRTimelineGroup
Zimmer Partners, LP33,100$2.1M0.04%-1,30013F-HRTimeline
Swiss National Bank32,200$2.04M<0.01%-2,60013F-HRTimeline
RHUMBLINE ADVISERS29,036$1.84M<0.01%+1,55313F-HR/ATimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…28,807$1.83M<0.01%+19,65113F-HRTimelineGroup
Rafferty Asset Management, LLC27,749$1.76M0.01%-8,97713F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC27,004$1.71M0.02%-182,23213F-HRTimelineGroup
PDT Partners, LLC25,778$1.63M0.14%new13F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC24,067$1.53M0.01%+1,17913F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…23,700$1.5M<0.01%013F-HRTimelineGroup
Sofinnova Investments, Inc.22,752$1.44M0.11%-18,60013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC21,203$1.34M<0.01%-3,52813F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.21,060$1.34M<0.01%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN20,778$1.32M<0.01%+7,80813F-HRTimelineGroup
Cubist Systematic Strategies, LLC20,187$1.28M0.02%new13F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC18,156$1.15M0.1%+4,15613F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc17,688$1.12M<0.01%+3,05113F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…17,005$1.08M0.01%-2,55513F-HRTimeline
ALGERT GLOBAL LLC16,337$1.04M0.02%+9,39713F-HR/ATimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\16,093$1.02M<0.01%+6,93313F-HR/ATimelineGroup
Harvest Investment Services, LLC15,614$990K0.24%-1,61313F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…15,531$985K<0.01%-1,43613F-HR/ATimeline
OCONNOR, A Distinct Business Unit of UB…14,257$904K0.02%-42613F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.13,444$852K<0.01%-742,42313F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL13,353$847K0.01%new13F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding13,323$843K-14Timeline
Trexquant Investment LP12,874$816K0.01%-3,20113F-HRTimeline
Engineers Gate Manager LP12,851$815K0.01%new13F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD12,213$774K<0.01%-15613F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…12,132$769K<0.01%+75513F-HRTimelineGroup
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC11,775$747K<0.01%new13F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC11,507$730K0.02%new13F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.10,881$690K<0.01%+5,25313F-HRTimelineGroup
Lion Point Capital, LP10,600$672K3.52%+2,90013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
HRT FINANCIAL LP10,358$656K<0.01%new13F-HRTimeline
Corebridge Financial, Inc.in group Corebridge Financial, Inc.9,809$622K<0.01%-74213F-HRTimelineGroup
SG Americas Securities, LLC8,076$512K<0.01%+3,21213F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC7,890$500K<0.01%+3,24313F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC7,879$500K<0.01%new13F-HRTimelineGroup
Bleakley Financial Group, LLC7,667$486K0.01%new13F-HRTimeline
ProShare Advisors LLC6,966$442K<0.01%+1,45813F-HRTimeline
HighVista Strategies LLC6,458$409K0.15%-3,10713F-HRTimeline
China Universal Asset Management Co., L…6,310$400K0.04%+59313F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND6,276$398K<0.01%-3,97913F-HR/ATimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…6,213$394K0.01%new13F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC5,862$372K<0.01%-15813F-HR/ATimelineGroup
PROFUND ADVISORS LLC5,537$351K0.01%-1,82113F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC5,278$335K<0.01%new13F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS5,114$324K<0.01%new13F-HRTimelineGroup
Schonfeld Strategic Advisors LLC4,900$311K<0.01%-38113F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC4,875$309K0.02%new13F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS4,857$308K<0.01%+39613F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM4,725$300K<0.01%-39613F-HRTimeline
Bayesian Capital Management, LP4,497$285K0.03%new13F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC4,196$266K0.05%-18,36813F-HRTimelineGroup
Police & Firemen's Retirement System of…4,107$260K<0.01%13F-HRTimeline
Fiduciary Trust Coin group Fiduciary Trust Co4,051$257K<0.01%new13F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…4,050$257K<0.01%new13F-HRTimeline
KLP KAPITALFORVALTNING AS3,700$235K<0.01%13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…2,867$182K<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,446$155K<0.01%+28313F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…1,999$127K<0.01%013F-HRTimelineGroup
Point72 (DIFC) Ltd1,176$74.6K0.01%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\1,176$74.6K<0.01%013F-HRTimelineGroup
VIRTUS ADVISERS, LLCin group Virtus Investment Advisers, L…1,106$70.1K0.03%-1,24713F-HRTimelineGroup
STRS OHIO900$57.1K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…825$52.3K<0.01%+26613F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…730$46K<0.01%013F-HRTimeline
AlphaQuest LLC629$39.9K0.01%-2,04113F-HRTimeline
GF FUND MANAGEMENT CO. LTD.625$39.6K<0.01%13F-HRTimeline
AMALGAMATED BANK568$36K<0.01%013F-HRTimeline
Sterling Capital Management LLC566$35.9K<0.01%+50313F-HRTimeline
Steward Partners Investment Advisory, L…525$33.3K<0.01%+12513F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.417$26.4K<0.01%new13F-HR/ATimelineGroup
GROUP ONE TRADING LLC400$25.4K<0.01%-7813F-HR/ATimeline
GAMMA Investing LLC239$15.2K<0.01%+13913F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.113$7K<0.01%013F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC83$5.26K<0.01%+4413F-HRTimeline
CWM, LLCin group CWM, LLC80$5K<0.01%+5813F-HRTimelineGroup
Larson Financial Group LLC68$4.31K<0.01%new13F-HRTimeline
Aster Capital Management (DIFC) Ltd54$3.42K<0.01%+4813F-HRTimeline
Clearstead Advisors, LLC46$2.92K<0.01%013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC25$2K<0.01%013F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC30$1.9K<0.01%+1013F-HRTimeline
Brooklyn Investment Group29$1.84K<0.01%new13F-HRTimeline
CoreCap Advisors, LLC28$1.77K<0.01%new13F-HRTimeline
Fortitude Family Office, LLC20$1.27K<0.01%new13F-HRTimeline
COMERICA BANK15$968<0.01%-613F-HR/ATimeline
WOLFF WIESE MAGANA LLC14$888<0.01%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…10$634<0.01%new13F-HRTimelineGroup
Caitong International Asset Management …7$444<0.01%13F-HR/ATimeline
SBI Securities Co., Ltd.6$380<0.01%13F-HRTimeline
Amundiin group Amundi5$313<0.01%-71213F-HRTimelineGroup
Quantbot Technologies LP4$254<0.01%-2,96013F-HRTimeline
True Wealth Design, LLC1$64<0.01%new13F-HRTimeline
IFP Advisors, Inc1$63<0.01%new13F-HRTimeline
Parallel Advisors, LLC1$63<0.01%new13F-HRTimeline
Covestor Ltd2$00%013F-HRTimelineValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$00%013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.
NOMURA ASSET MANAGEMENT CO LTDin group NOMURA ASSET MANAGEMENT CO LTD0$00%013F-HRTimelineGroupValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.