13F

Stock

Disc Medicine, Inc.

IRON · held by 204 managers

Reported value

$2.56B

Holders

204

+39 new · −37 exited

Holders’ est. mark

−$484.6M

Price effect on 156 books still in the name

Largest holder

$357.2M

Fidelity

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Fidelity5.59M$357.2M−$84.3MCut−$75.6M
RA CAPITAL MANAGEMENT, L.P.2.45M$156.7M−$30.6MCut−$257.5K
BlackRock, Inc.2.27M$145.4M−$35.2MCut−$35.3M
WELLINGTON MANAGEMENT GROUP LLP1.74M$111M−$23.5MCut−$9.61M
State Street1.7M$108.6M−$18.4MAdded$14.2M
Atlas Venture Life Science Advisors, LLC1.51M$96.8M−$23.4MCut−$23.4M
VANGUARD CAPITAL MANAGEMENT LLC1.38M$87.9MHeld
Frazier Life Sciences Management, L.P.1.35M$86.6M−$19.5MCut−$13.4M
TCG Crossover Management, LLC1.34M$85.8MNew
JPMORGAN CHASE & CO1.37M$83.4M−$25.6MCut−$42.2M
BVF INC/IL1.27M$81.4M−$10.1MAdded$29.7M
ORBIMED ADVISORS LLC1.07M$68.3M−$16.5MCut−$16.5M
Siren, L.L.C.988.4K$63.2M−$15.3MCut−$15.3M
Woodline Partners LP958.3K$61.3M−$14.8MCut−$14.8M
GEODE CAPITAL MANAGEMENT, LLC744.2K$47.6M−$10.6MCut−$6.81M
Vestal Point Capital, LP700K$44.8M−$10.8MCut−$13.6M
DEERFIELD MANAGEMENT COMPANY, L.P.657K$42M−$7.91MAdded$1.42M
GOLDMAN SACHS GROUP INC639.8K$40.9M−$9.9MCut−$19M
JENNISON ASSOCIATES LLC610.4K$39M−$8.23MCut−$3.22M
Logos Global Management LP560K$35.8M−$7.89MCut−$4.69M
Assenagon Asset Management S.A.546.2K$34.9M−$5.54MAdded$6.51M
ARMISTICE CAPITAL, LLC536K$34.3M−$7.73MCut−$5.38M
Bellevue Group AG459.3K$29.4MNew
Saturn V Capital Management LP449.9K$28.8M−$4.62MAdded$5.07M
Opaleye Management Inc.421K$26.9M−$3.09MAdded$11M
Palo Alto Investors LP401.7K$25.7M−$4.91MAdded$476.7K
EVENTIDE ASSET MANAGEMENT, LLC395.6K$25.3M−$6.12MCut−$6.11M
DIMENSIONAL FUND ADVISORS LP394.4K$25.2M−$3.46MAdded$7.47M
Pictet Asset Management Holding SA387K$24.7M−$5.99MCut−$6.57M
Aberdeen Group plc375.6K$24M−$3.63MAdded$5.41M
Foresite Capital Management V, LLC374.1K$23.9M−$4.63MAdded$168.9K
BAKER BROS. ADVISORS LP349.7K$22.4M−$5.21MCut−$4.41M
LOOMIS SAYLES & CO L P317.2K$20.3M−$4.37MCut−$2.14M
Checkpoint Capital L.P.286.7K$18.3M−$4.43MCut−$17.6M
Octagon Capital Advisors LP270K$17.3MNew
CHARLES SCHWAB INVESTMENT MANAGEMENT INC251.2K$16.1M−$3.82MCut−$3.56M
VANGUARD PORTFOLIO MANAGEMENT LLC247.3K$15.8MHeld
NORTHERN TRUST CORP247.2K$15.8M−$3.53MCut−$2.31M
VANGUARD FIDUCIARY TRUST CO217.4K$13.9MHeld
Bank of New York Mellon Corp205K$13.1M−$1.05MAdded$7.73M
SILVERARC CAPITAL MANAGEMENT, LLC196K$12.5MNew
Ensign Peak Advisors, Inc191.5K$12.2M−$2.74MCut−$1.82M
Integral Health Asset Management, LLC170K$10.9MNew
BANK OF AMERICA CORP /DE/166.8K$10.7M−$2.1MCut−$135.1K
Bain Capital Life Sciences Investors, LLC141.2K$9.03MNew
BNP PARIBAS FINANCIAL MARKETS127.7K$8.17M−$1.89MCut−$1.53M
Alyeska Investment Group, L.P.125K$7.99M−$773.5KAdded$4.02M
Catalio Capital Management, LP123K$7.86M−$1.71MCut−$905.8K
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC110.9K$7.09M−$1.72MCut−$1.99M
KENNEDY CAPITAL MANAGEMENT LLC108.3K$6.92M−$144.2KAdded$6.18M
UBS Group AG98.6K$6.31M−$1.53MCut−$2.91M
Citadel97.9K$6.26M−$1.51MCut−$1.71M
DNB Asset Management AS96.8K$6.19M−$1.3MCut−$504.2K
MORGAN STANLEY94.3K$6.03M−$1.16MAdded$85.3K
MILLENNIUM MANAGEMENT LLC83.3K$5.32M−$1.29MCut−$9.35M
Jump Financial, LLC81.8K$5.23MNew
Sofinnova Investments, Inc.78.3K$5.01M−$1.21MCut−$3.81M
Freestone Grove Partners LP68.7K$4.39MNew
Sio Capital Management, LLC65.2K$4.17M−$890.9KCut−$403.8K
Casdin Capital, LLC65K$4.16MNew
KVP Capital Advisors, LP58.3K$3.72M−$901.1KCut−$901.1K
MOORE CAPITAL MANAGEMENT, LP57.8K$3.7MNew
Rafferty Asset Management, LLC53.9K$3.44M−$558.4KAdded$578.2K
SPHERA FUNDS MANAGEMENT LTD.53.5K$3.42MNew
NEXTBio Capital Management LP52.7K$3.37M−$661.8KCut−$30.2K
Nuveen, LLC51.4K$3.29M−$749.8KCut−$563.8K
BURKEHILL GLOBAL MANAGEMENT, LP50K$3.2M−$773.5KCut−$773.5K
Atle Fund Management AB107.3K$3.19M−$2.38MCut−$620.4K
SCHRODER INVESTMENT MANAGEMENT GROUP51K$3.1M−$807.2KCut−$755.1K
Swiss National Bank48K$3.07M−$742.6KCut−$742.6K
AMERIPRISE FINANCIAL INC45.8K$2.93M−$709.1KCut−$3.66M
RAYMOND JAMES FINANCIAL INC44.7K$2.73M−$712KCut−$3.45M
BNP PARIBAS ASSET MANAGEMENT Holding S.A.39.9K$2.55M$2.55MAdded$2.55M
LAZARD ASSET MANAGEMENT LLC39.4K$2.52M−$609.5KCut−$2.09M
Universal- Beteiligungs- und Servicegesellschaft mbH38K$2.43M−$422.3KAdded$262.1K
SEVEN GRAND MANAGERS, LLC35K$2.24M−$541.5KCut−$541.5K
XTX Topco Ltd34.4K$2.2M−$357.3KAdded$366.8K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM34.4K$2.2M−$359.8KAdded$351.6K
BARCLAYS PLC33.3K$2.13M−$514.6KCut−$5.78M
RHUMBLINE ADVISERS33.1K$2.11M−$461.5KCut−$255.3K
MANUFACTURERS LIFE INSURANCE COMPANY, THE32.5K$2.08M−$442KCut−$1.99M
Brevan Howard Capital Management LP32.4K$2.04M−$494.2KCut−$1.85M
Renaissance Technologies31.8K$2.03M−$492.3KCut−$2.95M
Squarepoint Ops LLC31.7K$2.03M−$243.7KAdded$776.4K
ALPS ADVISORS INC31.1K$1.99M−$479.6KCut−$476K
TUDOR INVESTMENT CORP ET AL31K$1.98M−$479.6KCut−$3.27M
Invesco Ltd.30.6K$1.96M−$474KCut−$2.89M
ALLIANCEBERNSTEIN L.P.24.5K$1.95M$0Held
TD Asset Management Inc30.5K$1.95M−$471.5KCut−$3.58M
RTW INVESTMENTS, LP30K$1.92M−$464.1KCut−$464.1K
VICTORY CAPITAL MANAGEMENT INC29.2K$1.87M−$452KCut−$4.19M
BANK OF MONTREAL /CAN/28.8K$1.84M−$384.1KCut−$131.7K
Nantahala Capital Management, LLC25.7K$1.64M−$396.9KCut−$8.91M
PNC Financial Services Group, Inc.25.3K$1.62M−$389.8KCut−$384K
DEUTSCHE BANK AG\24.4K$1.56M−$317.5KCut−$69.5K
PROFUND ADVISORS LLC24K$1.53M−$208.5KAdded$462.5K
BOOTHBAY FUND MANAGEMENT, LLC21.4K$1.37MNew
Legal & General Group Plc19.4K$1.24M−$299.8KCut−$639.3K
Zimmer Partners, LP16.7K$1.07M−$258.3KCut−$1.12M
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.16.7K$1.06M−$216.7KCut−$27.8K
VANGUARD ASSET MANAGEMENT, Ltd16.1K$1.03MHeld
SEI INVESTMENTS CO15.5K$991.7KNew
SUSQUEHANNA INTERNATIONAL GROUP, LLP15.4K$985.1K−$144KAdded$245.8K
MetLife Investment Management, LLC15.1K$963.3K−$214KCut−$135.1K
WELLS FARGO & COMPANY/MN14.7K$939.2K−$227.3KCut−$1.7M
Headlands Technologies LLC14.6K$934.2KNew
STATE OF WISCONSIN INVESTMENT BOARD14.3K$913.6K−$221KCut−$444.8K
Icahn Capital14.2K$905.1K−$216.7KCut−$207.2K
SummitTX Capital, L.P.13.8K$883.7KNew
Vanguard Global Advisers, LLC12.5K$800.3KHeld
Atom Investors LP12.2K$777.6KNew
JANUS HENDERSON GROUP PLC11.6K$739.5K−$178.5KCut−$178.5K
Man Group plc10K$639.8KNew
Ghisallo Capital Management LLC10K$639.4K−$154.7KCut−$154.7K
Engineers Gate Manager LP9.27K$592.7K−$84.5KAdded$159.1K
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM8.7K$556.5K−$134.7KCut−$134.7K
NEW YORK STATE COMMON RETIREMENT FUND8.58K$548.3K−$132.7KCut−$562.2K
China Universal Asset Management Co., Ltd.8.37K$535.3K−$119.9KCut−$80.2K
State of New Jersey Common Pension Fund D8.32K$531.8K−$128.5KCut−$127.8K
Lion Point Capital, LP8.1K$517.9K−$125.3KCut−$125.3K
PSP Research LLC8K$511.5KNew
CITIGROUP INC7.74K$495K−$119.8KCut−$2.38M
Police & Firemen's Retirement System of New Jersey7.47K$477.9K−$103.9KCut−$55.4K
E Fund Management Co., Ltd.6.77K$433KHeld
ARIZONA STATE RETIREMENT SYSTEM6.68K$427.4K−$103.4KCut−$112.5K
INCEPTIONR LLC6.49K$414.9KNew
EntryPoint Capital, LLC6.37K$407.4KNew
CAPSTONE INVESTMENT ADVISORS, LLC6.26K$400.6KNew
Tower Research Capital LLC (TRC)6.02K$384.7K−$12KAdded$323.1K
STRS OHIO6K$383.6K−$92.8KCut−$92.8K
Vanguard Investments Australia, Ltd.5.96K$381KHeld
INTECH INVESTMENT MANAGEMENT LLC5.87K$375.2K−$90.8KCut−$411.8K
ProShare Advisors LLC5.69K$363.7K−$88KCut−$130.8K
Zurcher Kantonalbank (Zurich Cantonalbank)5.64K$360.6K−$46.2KAdded$123.3K
KLP KAPITALFORVALTNING AS5.2K$332.5K−$80.4KCut−$80.4K
Eleva Capital SAS5.12K$327.1KHeld
Entropy Technologies, LP4.79K$306.1K−$67.4KCut−$39.8K
VOYA INVESTMENT MANAGEMENT LLC4.42K$282.6K−$68.4KCut−$764.5K
PRUDENTIAL FINANCIAL INC4.26K$272.7KNew
Fiduciary Trust Co4.05K$259K−$62.7KCut−$62.7K
AlphaCentric Advisors LLC3.97K$254K−$58.1KCut−$44.3K
LOS ANGELES CAPITAL MANAGEMENT LLC3.95K$252.7K−$86.2KCut−$304.2K
Creative Planning3.77K$241K−$58.3KCut−$65.8K
Bayforest Capital Ltd3.56K$227.9KNew
Seven Fleet Capital Management LP3.23K$206.6KNew
TEACHER RETIREMENT SYSTEM OF TEXAS3.14K$201K−$48.6KCut−$86K
Virtus Investment Advisers, LLC2.97K$189.7K−$44.8KCut−$40.3K
Russell Investments Group, Ltd.2.63K$168.4K−$40.8KCut−$1.71M
Ameritas Investment Partners, Inc.2.25K$143.7K−$31.9KCut−$19.8K
Mirae Asset Global Investments Co., Ltd.1.99K$127.2K−$28.4KCut−$18.4K
PRICE T ROWE ASSOCIATES INC /MD/1.55M$99.1K−$24KCut−$35.8K
JONES FINANCIAL COMPANIES LLLP1.63K$97.8KNew
US BANCORP \DE\1.19K$75.8K−$18.2KCut−$17.6K
CWM, LLC1.03K$66.2K$66KAdded$66.1K
Caitong International Asset Management Co., Ltd1K$64K−$3.59KAdded$45.6K
GF FUND MANAGEMENT CO. LTD.848$54.2K−$11.5KCut−$4.7K
Aquatic Capital Management LLC693$44.3KNew
Allworth Financial LP599$38.3K−$108Added$37.7K
Steward Partners Investment Advisory, LLC528$33.8K−$8.17KCut−$8.17K
ANTIPODES PARTNERS Ltd476$30.4K−$6.48KCut−$2.84K
SUMMIT SECURITIES GROUP LLC287$18.4KNew
OSAIC HOLDINGS, INC.275$17.6K−$4.22KCut−$4.09K
GAMMA Investing LLC268$17.1K−$4.15KCut−$7K
Kemnay Advisory Services Inc.246$15.7K−$1.07KAdded$10.3K
NISA INVESTMENT ADVISORS, LLC240$15.3K−$3.71KCut−$3.71K
J.Safra Asset Management Corp194$12.4K−$975Added$7.4K
Sterling Capital Management LLC178$11.4K−$2.52KCut−$1.56K
Larson Financial Group LLC123$7.87K−$1.73KCut−$1.03K
Smartleaf Asset Management LLC92$5.59K−$1.18KCut−$21
Optiver Holding B.V.82$5.24K−$1.08KCut−$316
EverSource Wealth Advisors, LLC71$4.54K−$1.04KCut−$780
iA Global Asset Management Inc.66.2K$4.24K−$1.02KCut−$1.04K
Farther Finance Advisors, LLC44$2.85K−$644Cut−$1.36K
ROTHSCHILD INVESTMENT LLC41$2.62K−$618Cut−$554
Aster Capital Management (DIFC) Ltd52$2.58KNew
ROYAL BANK OF CANADA24$2K$85Cut−$62K
FIRST HORIZON CORP30$1.92K−$433Cut−$305
FIFTH THIRD BANCORP29$1.86KNew
ALGERT GLOBAL LLC22.7K$1.45KNew
Parkside Financial Bank & Trust20$1.28K−$309Cut−$309
Versant Capital Management, Inc19$1.22K−$294Cut−$294
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY19K$1.21K−$250Cut−$69
JPL Wealth Management, LLC17$1.09KNew
Geneos Wealth Management Inc.13$831New
ASSETMARK, INC12$767−$186Cut−$186
SG Americas Securities, LLC11.2K$718−$173Cut−$959
Cornerstone Financial Management LLC11$703−$171Cut−$171
GROUP ONE TRADING LLC11$703New
Bare Financial Services, Inc9$575−$140Cut−$140
CAPITAL & PLANNING, LLC6$384New
Essential Partners LLC4$256−$62Cut−$62
Root Financial Partners, LLC4$256New
Virtu Financial LLC3.79K$242New
IFP Advisors, Inc3$192−$46Cut−$46
MAI Capital Management3$192New
Keating Financial Advisory Services, Inc.3$192New
KBC Group NV1.01K$65−$15Cut−$15
TWIN PEAKS WEALTH ADVISORS, LLC1$64New
Hughes Financial Services, LLC1$64−$15Cut−$15
SBI Securities Co., Ltd.1$64−$15Cut−$15
True Wealth Design, LLC1$64−$16Cut−$16
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO730$47−$11Cut−$11
Covestor Ltd2$0$0Held
NOMURA ASSET MANAGEMENT CO LTD0$0Held

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.