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Disc Medicine (IRON) Institutional Ownership

Disc Medicine logo
$56.66 -3.82 (-6.31%)
Closing price 03:59 PM Eastern
Extended Trading
$56.54 -0.12 (-0.21%)
As of 04:04 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Disc Medicine (NASDAQ:IRON)

Current
Institutional Ownership
Percentage
83.70%
Number of
Institutional Buyers
(last 12 months)
123
Total
Institutional Inflows
(last 12 months)
$1.06B
Number of
Institutional Sellers
(last 12 months)
42
Total
Institutional Outflows
(last 12 months)
$309.42M
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IRON Institutional Buying and Selling by Quarter

Disc Medicine Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Opaleye Management Inc.855,000$62.54M5.7%+103.1%22.295%
9/9/2026Engineers Gate Manager LP19,552$1.43M0.0%+110.9%0.510%
9/9/2026Squarepoint Ops LLC75,872$5.55M0.0%+139.3%1.981%
9/8/2026Arizona State Retirement System6,844$501K0.0%+2.4%0.179%
9/8/2026Nykredit A S1,411$103K0.0%N/A0.037%
8/21/2026AXQ Capital LP6,035$441K0.0%N/A0.016%
8/21/2026Nykredit A S1,411$103K0.0%N/A0.004%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC114,109$8.35M0.0%+2.9%2.975%
8/19/2026Wellington Management Group LLP1,741,351$127.36M0.0%+0.3%45.407%
8/18/2026Palo Alto Investors LP416,646$30.47M0.0%N/A10.878%
8/17/2026Capstone Investment Advisors LLC3,355$245K0.0%N/A0.088%
8/17/2026Bank of America Corp DE135,111$9.88M0.0%N/A3.528%
8/15/2026Man Group plc14,925$1.09M0.0%N/A0.390%
8/15/2026Jupiter Topco LLC11,555$844K0.0%N/A0.302%
8/14/2026Legal & General Group Plc18,458$1.35M0.0%N/A0.482%
8/14/2026The Manufacturers Life Insurance Company27,771$2.03M0.0%N/A0.725%
8/14/2026Algert Global LLC51,850$3.79M0.0%+128.6%1.354%
8/12/2026Quantbot Technologies LP2,090$153K0.0%N/A0.005%
8/11/2026Allworth Financial LP633$46K0.0%N/A0.002%
8/11/2026E Fund Management Co. Ltd.3,746$274K0.0%N/A0.010%
8/7/2026BlackRock Inc.2,467,899$180.50M0.0%N/A6.467%
8/7/2026Deutsche Bank AG30,643$2.24M0.0%N/A0.080%
8/6/2026Bank of New York Mellon Corp204,727$14.97M0.0%N/A0.536%
8/6/2026State of Wyoming346$25K0.0%N/A0.001%
8/6/2026GSA Capital Partners LLP16,324$1.19M0.1%N/A0.043%
7/10/2026Handelsbanken Fonder AB12,700$929K0.0%N/A0.033%
7/8/2026Assenagon Asset Management S.A.384,158$28.10M0.0%-29.7%1.007%
6/4/2026Seven Fleet Capital Management LP3,231$207K0.1%N/A0.008%
5/19/2026Bank of America Corp DE166,775$10.66M0.0%+22.6%0.437%
5/18/2026California State Teachers Retirement System34,382$2.20M0.0%+47.8%0.090%
5/16/2026The Manufacturers Life Insurance Company32,493$2.08M0.0%-38.1%0.085%
5/16/2026SummitTX Capital L.P.13,820$884K0.0%N/A0.036%
5/16/2026Lazard Asset Management LLC39,400$2.52M0.0%-32.1%0.103%
5/15/2026Octagon Capital Advisors LP270,000$17.26M1.9%N/A0.708%
5/15/2026Entropy Technologies LP4,788$306K0.0%+9.9%0.013%
5/14/2026Renaissance Technologies LLC31,820$2.04M0.0%-49.3%0.083%
5/14/2026Inceptionr LLC6,489$415K0.1%N/A0.017%
5/14/2026Sei Investments Co.15,510$992K0.0%N/A0.041%
5/7/2026Dimensional Fund Advisors LP394,447$25.21M0.0%+76.4%1.034%
5/7/2026AlphaCentric Advisors LLC3,972$254K0.3%+5.8%0.010%
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5/6/2026Jennison Associates LLC610,382$39.03M0.0%+14.7%1.600%
5/5/2026Bank of New York Mellon Corp204,968$13.11M0.0%+202.7%0.537%
5/4/2026Teachers Retirement System of The State of Kentucky18,993$1.21M0.0%+17.6%0.050%
4/24/2026iA Global Asset Management Inc.66,243$4.24M0.1%-0.3%0.174%
4/22/2026Pictet Asset Management Holding SA387,005$24.75M0.0%-1.9%1.014%
4/20/2026Assenagon Asset Management S.A.546,247$34.93M0.1%+52.7%1.431%
4/16/2026SG Americas Securities LLC11,226$718K0.0%-46.9%0.029%
2/19/2026Invesco Ltd.61,070$4.85M0.0%+184.8%0.162%
2/18/2026KVP Capital Advisors LP58,250$4.63M4.5%N/A0.154%
2/18/2026XTX Topco Ltd23,094$1.83M0.0%N/A0.061%
2/18/2026Zimmer Partners LP27,500$2.18M0.1%-69.5%0.073%
2/18/2026VARCOV Co.5,327$423K0.2%N/A0.014%
2/18/2026Vestal Point Capital LP735,000$58.37M2.0%+47.0%1.947%
2/18/2026Virtus Investment Advisers LLC2,897$230K0.1%+34.2%0.008%
2/18/2026Wellington Management Group LLP1,518,274$120.57M0.0%+7.7%4.022%
2/18/2026Tudor Investment Corp ET AL66,125$5.25M0.0%N/A0.175%
2/18/2026RTW Investments LP30,000$2.38M0.0%N/A0.079%
2/18/2026Orbimed Advisors LLC1,067,550$84.77M1.8%-24.6%2.828%
2/18/2026Opaleye Management Inc.200,000$15.88M2.1%+3.2%0.530%
2/18/2026Perceptive Advisors LLC450,743$35.79M0.6%N/A1.194%
2/18/2026Janus Henderson Group PLC11,555$918K0.0%-96.8%0.031%
2/18/2026Engineers Gate Manager LP5,460$434K0.0%N/A0.014%
2/18/2026Catalio Capital Management LP110,427$8.77M1.6%-49.0%0.293%
2/18/2026Balyasny Asset Management L.P.221,761$17.61M0.0%-34.4%0.587%
2/18/2026BVF Inc. IL650,000$51.62M1.7%N/A1.722%
2/18/2026Armistice Capital LLC499,391$39.66M0.5%+14.5%1.323%
2/17/2026Logos Global Management LP510,000$40.50M2.4%+13.3%1.351%
2/17/2026Burkehill Global Management LP50,000$3.97M0.3%N/A0.132%
2/17/2026Abel Hall LLC4,443$353K0.1%N/A0.012%
2/17/2026Lazard Asset Management LLC58,053$4.61M0.0%N/A0.154%
2/17/2026Jain Global LLC7,319$581K0.0%N/A0.019%
2/17/2026First Light Asset Management LLC523,167$41.55M3.2%+126.3%1.386%
2/17/2026RA Capital Management L.P.1,976,132$156.93M1.6%+25.3%5.235%
2/17/2026Price T Rowe Associates Inc. MD1,698,005$134.84M0.0%+28.0%4.498%
2/17/2026Ghisallo Capital Management LLC10,000$794K0.0%N/A0.026%
2/17/2026California State Teachers Retirement System23,256$1.85M0.0%+5.3%0.062%
2/17/2026Russell Investments Group Ltd.23,683$1.88M0.0%+871.4%0.063%
2/17/2026State of Wisconsin Investment Board17,106$1.36M0.0%+38.3%0.045%
2/17/2026Fred Alger Management LLC12,267$974K0.0%-10.6%0.032%
2/17/2026ExodusPoint Capital Management LP58,211$4.62M0.0%N/A0.154%
2/17/2026Royal Bank of Canada802$64K0.0%-95.2%0.002%
2/17/2026Persistent Asset Partners Ltd1,780$141K0.1%N/A0.005%
2/16/2026Squarepoint Ops LLC15,754$1.25M0.0%+193.0%0.042%
2/16/2026Sofinnova Investments Inc.111,010$8.82M0.4%+719.1%0.294%
2/16/2026Verition Fund Management LLC63,535$5.05M0.0%+936.0%0.168%
2/16/2026NEXTBio Capital Management LP42,778$3.40M2.0%N/A0.113%
2/16/2026Nicholas Investment Partners LP48,082$3.82M0.3%-45.4%0.127%
2/16/2026First Turn Management LLC153,206$12.17M1.4%-61.5%0.406%
2/16/2026Frazier Life Sciences Management L.P.1,260,000$100.06M2.7%-12.4%3.338%
2/16/2026Kennedy Capital Management LLC9,324$740K0.0%+3.3%0.025%
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2/16/2026Eventide Asset Management LLC395,392$31.40M0.5%+28.4%1.047%
2/16/2026Entropy Technologies LP4,357$346K0.0%N/A0.012%
2/16/2026Barclays PLC99,612$7.91M0.0%-7.1%0.264%
2/13/2026Nantahala Capital Management LLC132,800$10.55M0.3%-53.9%0.352%
2/13/2026FORA Capital LLC6,735$544K0.1%N/A0.018%
2/13/2026Marshall Wace LLP4,642$369K0.0%-66.8%0.012%
2/13/2026The Manufacturers Life Insurance Company 52,510$4.07M0.0%+10.4%0.139%
2/13/2026Schroder Investment Management Group50,103$3.85M0.0%-25.4%0.133%
2/13/2026Rafferty Asset Management LLC36,093$2.87M0.0%-3.2%0.096%
2/13/2026Alyeska Investment Group L.P.50,000$3.97M0.0%N/A0.132%


IRON Institutional Ownership - Frequently Asked Questions

During the previous two years, 198 institutional investors and hedge funds held shares of Disc Medicine. The most heavily invested institutionals were BlackRock Inc. ($180.50M), RA Capital Management L.P. ($156.93M), Vanguard Group Inc. ($140.37M), Price T Rowe Associates Inc. MD ($134.84M), Wellington Management Group LLP ($127.36M), JPMorgan Chase & Co. ($125.56M), and Atlas Venture Life Science Advisors LLC ($120.22M).Learn more on Disc Medicine's institutional investors.

83.70% of Disc Medicine's stock is owned by institutional investors. Learn more on IRON's institutional investor holdings.

Of the 170 institutional investors that purchased Disc Medicine's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($2.47M), RA Capital Management L.P. ($1.98M), FMR LLC ($1.46M), Siren L.L.C. ($1.15M), Wellington Management Group LLP ($1.15M), JPMorgan Chase & Co. ($959.55K), and Janus Henderson Group PLC ($771.94K).

Institutional investors have bought a total of 14,148,361 shares in the last 24 months. This purchase volume represents approximately $1.06B in transactions.

Of the 42 institutional investors that sold Disc Medicine's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Paradigm Biocapital Advisors LP ($963.26K), Atlas Venture Life Science Advisors LLC ($870.58K), Janus Henderson Group PLC ($350.15K), Orbimed Advisors LLC ($347.47K), First Turn Management LLC ($244.49K), JPMorgan Chase & Co. ($181.47K), and Frazier Life Sciences Management L.P. ($178.53K).

Institutional investors have sold a total of 4,192,809 shares in the last 24 months. This volume of shares sold represents approximately $309.42M in transactions.


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Institutional ownership data for NASDAQ:IRON is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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