Stock Ownership/DYN

DYNE THERAPEUTICS INC (DYN): Ownership & Insider Activity

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

Reported Holders
20
13F filers
Aggregate Value
$226.4M
Across holders
Last Price
$25.99
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity10 increased7 reduced5 exited
Full exits: FARALLON CAPITAL MANAGEMENT LLC, TUDOR INVESTMENT CORP ET AL, Qube Research & Technologies Ltd, CAPSTONE INVESTMENT ADVISORS, LLC, Man Group plc
Institutional Holders of DYN
↗
20 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
ORBIMED ADVISORS LLC
CIK 0001055951
Hedge Fund3.24M$71.9M31.7%1.3%Added+$7.1MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund1.49M$33.1M14.6%0.0%Added+$27.5MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund1.14M$25.4M11.2%0.0%Added+$24.3MQ2 2026
BAKER BROS. ADVISORS LP
CIK 0001263508
Hedge Fund813K$18.1M8.0%0.1%Unchanged+$0Q2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund432K$9.6M4.2%0.0%Added+$6.1MQ2 2026
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund415K$9.2M4.1%0.0%Added+$264KQ2 2026
ArrowMark Colorado Holdings LLC
CIK 0001483859
Hedge Fund397K$8.8M3.9%0.4%Reduced$-6.1MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund361K$8.0M3.5%0.0%Reduced$-3.8MQ2 2026
Tetragon Partners GP Ltd
CIK 0001515070
Hedge Fund357K$7.9M3.5%1.2%Added+$2.2MQ2 2026
MOORE CAPITAL MANAGEMENT, LP
CIK 0001448574
Hedge Fund306K$6.8M3.0%0.1%Added+$5.0MQ2 2026
ORBIMED ADVISORS LLCAdded
Hedge Fund
$71.9M· 31.7% of total· 1.3% port· 3.24M sh· +$7.1M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$33.1M· 14.6% of total· 0.0% port· 1.49M sh· +$27.5M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$25.4M· 11.2% of total· 0.0% port· 1.14M sh· +$24.3M QoQ· Q2 2026
BAKER BROS. ADVISORS LPUnchanged
Hedge Fund
$18.1M· 8.0% of total· 0.1% port· 813K sh· +$0 QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$9.6M· 4.2% of total· 0.0% port· 432K sh· +$6.1M QoQ· Q2 2026
Clearbridge Investments, LLCAdded
Hedge Fund
$9.2M· 4.1% of total· 0.0% port· 415K sh· +$264K QoQ· Q2 2026
ArrowMark Colorado Holdings LLCReduced
Hedge Fund
$8.8M· 3.9% of total· 0.4% port· 397K sh· $-6.1M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$8.0M· 3.5% of total· 0.0% port· 361K sh· $-3.8M QoQ· Q2 2026
Tetragon Partners GP LtdAdded
Hedge Fund
$7.9M· 3.5% of total· 1.2% port· 357K sh· +$2.2M QoQ· Q2 2026
MOORE CAPITAL MANAGEMENT, LPAdded
Hedge Fund
$6.8M· 3.0% of total· 0.1% port· 306K sh· +$5.0M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$6.7M· 2.9% of total· 0.0% port· 300K sh· $-11.9M QoQ· Q2 2026
Fisher Asset Management, LLCReduced
Institutional Manager
$6.6M· 2.9% of total· 0.0% port· 299K sh· $-545K QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$3.3M· 1.5% of total· 0.0% port· 150K sh· $-18.9M QoQ· Q2 2026
Woodline Partners LPUnchanged
Hedge Fund
$3.3M· 1.5% of total· 0.0% port· 149K sh· +$0 QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$3.0M· 1.3% of total· 0.0% port· 135K sh· — QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$1.9M· 0.8% of total· 0.0% port· 84K sh· $-9.2M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$1.3M· 0.6% of total· 0.0% port· 60K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPUnchanged
Hedge Fund
$827K· 0.4% of total· 0.0% port· 37K sh· +$0 QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$317K· 0.1% of total· 0.0% port· 14K sh· $-494K QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$315K· 0.1% of total· 0.0% port· 14K sh· — QoQ· Q2 2026
1–10 of 20
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