Stock Ownership/IRON

DISC MEDICINE INC (IRON): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in IRON · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
17
13F filers
Aggregate Value
$180.1M
Across holders
Last Price
$80.94
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity10 increased4 reduced1 exited
Full exits: RENAISSANCE TECHNOLOGIES LLC
Institutional Holders of IRON
↗
17 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Woodline Partners LP
CIK 0001784547
Hedge Fund958K$70.1M38.9%0.2%Unchanged+$0Q2 2026
ORBIMED ADVISORS LLC
CIK 0001055951
Hedge Fund358K$26.2M14.5%0.5%Reduced$-51.9MQ2 2026
BAKER BROS. ADVISORS LP
CIK 0001263508
Hedge Fund350K$25.6M14.2%0.1%Unchanged+$0Q2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund209K$15.3M8.5%0.0%Added+$12.3MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund137K$10.0M5.6%0.0%Added—Q2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund106K$7.8M4.3%0.0%Added+$1.7MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund76K$5.5M3.1%0.0%Added+$3.2MQ2 2026
MOORE CAPITAL MANAGEMENT, LP
CIK 0001448574
Hedge Fund58K$4.2M2.3%0.1%Unchanged+$0Q2 2026
ExodusPoint Capital Management, LP
CIK 0001736225
Hedge Fund52K$3.8M2.1%0.0%Added—Q2 2026
Brevan Howard Capital Management LP
CIK 0001512857
Hedge Fund50K$3.7M2.0%0.0%Added+$3.0MQ2 2026
Woodline Partners LPUnchanged
Hedge Fund
$70.1M· 38.9% of total· 0.2% port· 958K sh· +$0 QoQ· Q2 2026
ORBIMED ADVISORS LLCReduced
Hedge Fund
$26.2M· 14.5% of total· 0.5% port· 358K sh· $-51.9M QoQ· Q2 2026
BAKER BROS. ADVISORS LPUnchanged
Hedge Fund
$25.6M· 14.2% of total· 0.1% port· 350K sh· +$0 QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$15.3M· 8.5% of total· 0.0% port· 209K sh· +$12.3M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$10.0M· 5.6% of total· 0.0% port· 137K sh· — QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$7.8M· 4.3% of total· 0.0% port· 106K sh· +$1.7M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$5.5M· 3.1% of total· 0.0% port· 76K sh· +$3.2M QoQ· Q2 2026
MOORE CAPITAL MANAGEMENT, LPUnchanged
Hedge Fund
$4.2M· 2.3% of total· 0.1% port· 58K sh· +$0 QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$3.8M· 2.1% of total· 0.0% port· 52K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$3.7M· 2.0% of total· 0.0% port· 50K sh· +$3.0M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$2.5M· 1.4% of total· 0.0% port· 34K sh· — QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALReduced
Hedge Fund
$2.1M· 1.2% of total· 0.0% port· 29K sh· $-171K QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$1.1M· 0.6% of total· 0.0% port· 15K sh· +$360K QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$933K· 0.5% of total· 0.0% port· 13K sh· — QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$722K· 0.4% of total· 0.0% port· 10K sh· $-8.3M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$441K· 0.2% of total· 0.0% port· 6K sh· — QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCReduced
Hedge Fund
$245K· 0.1% of total· 0.0% port· 3K sh· $-213K QoQ· Q2 2026
1–10 of 17
1 / 2
Loading recent insider activity…
← Stock ownership