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Disclosery

DYN DYNE THERAPEUTICS INC

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Stock (common), issuer CIK 1818794

205 managers (207 13F filers) reported a position in DYN shares at 2025-09-30, 155,835,362 shares in all. 35 filers opened a position and 27 filers sold out during the quarter.

Managers
205
13F filers
207
New
35
Added
112
Reduced
38
Sold out
27
Shares held by filers
155,835,362

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

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
Posner Brian Sdirector2026-10-02+2,500 P$16Form 4

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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
JANUS HENDERSON GROUP PLCin group Janus Henderson14,745,505$186M0.09%+5,307,54313F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC9,760,414$123M<0.01%+2,109,25713F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.9,634,909$122M<0.01%+1,556,48113F-HRTimelineGroup
Atlas Venture Life Science Advisors, LLC9,130,465$116M15.35%013F-HRTimeline
FCPM III SERVICES B.V.in group FCPM III SERVICES B.V.5,462,846$69.1M13.81%013F-HRTimelineGroup
FMR LLCin group FMR LLC5,401,916$68.3M<0.01%+108,54713F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP5,268,917$66.7M<0.01%+1,913,23913F-HRTimelineGroup
Siren, L.L.C.in group Siren, L.L.C.4,729,174$59.8M2.34%-107,26313F-HRTimelineGroup
TCG Crossover Management, LLC4,615,144$58.4M2.87%+848,48413F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…3,554,000$45M0.07%+363,00013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC3,413,435$43.2M0.03%+2,469,56113F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO3,365,245$42.6M<0.01%+278,46613F-HR/ATimelineGroup
ARMISTICE CAPITAL, LLC3,064,000$38.8M1.22%+504,00013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP3,013,377$38.1M0.04%+2,565,57013F-HRTimelineGroup
RTW INVESTMENTS, LP2,890,567$36.6M0.45%+1,200,00013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,867,605$36.3M<0.01%+613,93513F-HRTimelineGroup
T. Rowe Price Investment Management, In…2,812,422$35.6M0.02%+1,018,83213F-HRTimeline
Vestal Point Capital, LP2,775,000$35.1M1.59%+2,047,50013F-HRTimeline
BRAIDWELL LP2,730,481$34.5M1.02%-542,86813F-HRTimeline
Frazier Life Sciences Management, L.P.2,718,105$34.4M1.03%+1,212,12113F-HRTimeline
Saturn V Capital Management LP2,674,469$33.8M7.42%+1,219,04013F-HRTimeline
Vivo Capital, LLC2,614,960$33.1M2.66%+1,500,00013F-HRTimeline
Logos Global Management LP2,400,000$30.4M3%+500,00013F-HRTimeline
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC2,314,184$29.3M0.7%+1,282,78413F-HRTimelineGroup
Venrock Adviser, LLC2,173,913$27.5M1.55%013F-HRTimeline
Deep Track Capital, LP2,000,000$25.3M0.71%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,900,215$24M<0.01%+559,77213F-HRTimelineGroup
Paradigm Biocapital Advisors LPin group Paradigm Biocapital Advisors …1,898,950$24M0.71%new13F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.1,717,807$21.7M0.05%+1,594,52313F-HRTimelineGroup
MPM BIOIMPACT LLC1,446,361$18.3M3%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,419,007$18M<0.01%+56,83113F-HR/ATimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources1,398,530$17.7M<0.01%+8,39013F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/1,398,087$17.7M<0.01%-985,86613F-HRTimeline
Palo Alto Investors LP1,262,674$16M2.96%+997,69813F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,037,568$13.1M<0.01%+196,53113F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,007,194$12.7M<0.01%+262,12313F-HRTimelineGroup
Sofinnova Investments, Inc.985,828$12.5M0.77%+370,96313F-HRTimeline
FRONTIER CAPITAL MANAGEMENT CO LLC910,919$11.5M0.1%+121,49413F-HRTimeline
Candriam S.C.A.833,922$10.5M0.06%+309,76113F-HRTimeline
Qube Research & Technologies Ltd829,769$10.5M0.01%+37,78213F-HRTimeline
Rock Springs Capital Management LP824,061$10.4M0.61%+243,06313F-HRTimeline
Integral Health Asset Management, LLC800,000$10.1M0.74%new13F-HRTimeline
ArrowMark Colorado Holdings LLC785,915$9.94M0.18%+15,69013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/761,112$9.63M<0.01%+247,31113F-HR/ATimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC729,606$9.23M0.04%new13F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC710,044$8.98M0.03%-81,07613F-HRTimeline
Nantahala Capital Management, LLCin group Nantahala Capital Management,…702,884$8.89M0.55%-42,17813F-HRTimelineGroup
MPM ASSET MANAGEMENT LLC682,376$8.63M19.4%013F-HRTimeline
Jain Global LLC644,082$8.15M0.11%+47,91513F-HRTimeline
UBS Group AGgroup of 2 filers holding578,818$7.32M+163,382Timeline
Aberdeen Group plcin group Aberdeen Group plc556,733$7.04M0.01%+72,77013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA543,166$6.87M<0.01%+168,19713F-HRTimelineGroup
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC540,444$6.84M0.2%-1,706,94613F-HRTimelineGroup
Polar Capital Holdings Plcin group Polar Capital Holdings Plc529,388$6.7M0.03%new13F-HRTimelineGroup
WASATCH ADVISORS LP523,924$6.63M0.04%-34,01313F-HRTimeline
University of Wisconsin Foundation517,750$6.55M5.55%new13F-HRTimeline
ALGERT GLOBAL LLC515,132$6.52M0.11%-43,76413F-HR/ATimeline
BARCLAYS PLCin group BARCLAYS PLC480,701$6.08M<0.01%+160,21113F-HR/ATimelineGroup
STEMPOINT CAPITAL LP474,612$6M1.21%new13F-HRTimeline
SPHERA FUNDS MANAGEMENT LTD.in group SPHERA FUNDS MANAGEMENT LTD.426,518$5.4M1.28%+205,10213F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC422,656$5.35M<0.01%+137,65213F-HRTimelineGroup
Schonfeld Strategic Advisors LLC415,927$5.26M0.04%+82,47413F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC413,940$5.24M<0.01%+271,22113F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC345,500$4.37M0.01%new13F-HRTimeline
Trexquant Investment LP345,462$4.37M0.05%-16,84813F-HRTimeline
Nuveen, LLCin group TIAA344,897$4.36M<0.01%+145,06613F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC321,426$4.07M<0.01%+121,16013F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp317,364$4.01M<0.01%+47,70013F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD284,000$3.59M<0.01%new13F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC281,340$3.56M<0.01%+152,37813F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP275,596$3.41M<0.01%+69,97013F-HRTimeline
Tetragon Partners GP Ltdin group Tetragon Partners GP Ltd223,181$2.82M0.41%+84,80613F-HRTimelineGroup
Rafferty Asset Management, LLC213,211$2.7M0.01%+102,96313F-HRTimeline
PDT Partners, LLC201,240$2.55M0.16%-184,00813F-HRTimeline
Swiss National Bank178,300$2.26M<0.01%+37,90013F-HRTimeline
Darwin Wealth Management, LLC173,517$2.19M0.7%+86113F-HRTimeline
RHUMBLINE ADVISERS167,820$2.12M<0.01%+13,27913F-HRTimeline
AXA Investment Managers S.A.163,231$2.06M0.01%13F-HRTimeline
DekaBank Deutsche Girozentrale60,000$1.84M<0.01%013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC141,875$1.79M<0.01%+98,96513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS136,385$1.73M<0.01%-140,87413F-HRTimelineGroup
SummitTX Capital, L.P.132,900$1.68M0.07%+13,93913F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\125,886$1.59M<0.01%-192,76713F-HRTimelineGroup
Burkehill Global Management, LP120,000$1.52M0.09%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…117,770$1.49M<0.01%-68,24513F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.117,563$1.49M<0.01%+35,42113F-HRTimelineGroup
TWINBEECH CAPITAL LP115,341$1.46M0.06%-81,80713F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…113,932$1.44M<0.01%+70,00713F-HRTimelineGroup
Ikarian Capital, LLCin group Ikarian Capital, LLC113,837$1.44M0.29%-250,00013F-HRTimelineGroup
Voleon Capital Management LP111,838$1.41M0.03%+67,11513F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc107,975$1.37M<0.01%+29,44213F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.106,680$1.35M<0.01%+8,44013F-HRTimeline
Engineers Gate Manager LP102,991$1.3M0.01%-69,47813F-HRTimeline
SILVERARC CAPITAL MANAGEMENT, LLCin group SILVERARC CAPITAL MANAGEMENT,…100,000$1.26M0.18%new13F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC99,884$1.26M0.02%new13F-HR/ATimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC98,701$1.25M<0.01%+45,52713F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…89,160$1.13M<0.01%-12,45213F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN87,121$1.1M<0.01%+30,41613F-HRTimelineGroup
COMERICA BANK86,496$1.09M<0.01%+11,15813F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd78,072$988K0.04%new13F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC76,912$973K<0.01%+25,43213F-HRTimelineGroup
DARK FOREST CAPITAL MANAGEMENT LP68,888$871K0.03%+47,60413F-HR/ATimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding67,135$846K+5,934Timeline
Campbell & CO Investment Adviser LLC64,517$816K0.06%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…64,221$812K<0.01%+7,37713F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…59,302$750K0.01%+44,17913F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …57,343$725K<0.01%+7,45713F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC53,050$671K0.01%-12,97613F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC50,102$634K<0.01%-16,31113F-HRTimeline
Aegis Wealth Management LLC49,908$631K0.34%+16,68013F-HRTimeline
ARCADIA INVESTMENT MANAGEMENT CORP/MI49,225$623K0.1%-5,99013F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC47,680$603K<0.01%+7,05913F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC47,592$602K<0.01%-134,14813F-HRTimelineGroup
PROFUND ADVISORS LLC45,980$582K0.02%+22,33813F-HRTimeline
Graham Capital Management, L.P.43,176$546K0.02%+29,68813F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…41,915$530K<0.01%+7,89713F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.41,587$526K<0.01%-467,35313F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD39,959$505K<0.01%-39,39513F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC37,663$476K0.05%+14,60013F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP35,190$445K0.04%+21,25913F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND34,673$439K<0.01%+9,70013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC33,385$422K<0.01%-28,14213F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…33,314$421K<0.01%+14,06713F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…33,100$419K<0.01%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC31,385$397K<0.01%new13F-HRTimelineGroup
Police & Firemen's Retirement System of…29,919$378K<0.01%+9,58513F-HRTimeline
OPTIMIZE FINANCIAL INC.29,874$378K0.2%+15,21713F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd29,215$370K0.02%-7,24813F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC29,084$368K0.01%-91,00013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM27,204$344K<0.01%+5,76313F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P27,050$342K0.01%new13F-HRTimeline
China Universal Asset Management Co., L…24,937$315K0.03%+2,10813F-HRTimeline
ProShare Advisors LLC23,741$300K<0.01%+25113F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS22,448$284K<0.01%+2,74813F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…20,605$261K<0.01%013F-HRTimeline
TD Asset Management Inc20,382$258K<0.01%new13F-HRTimeline
Ensign Peak Advisors, Inc20,150$255K<0.01%-245,92313F-HR/ATimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…20,000$253K0.01%new13F-HRTimelineGroup
KLP KAPITALFORVALTNING AS19,800$250K<0.01%+4,60013F-HRTimeline
Mariner, LLCin group Mariner, LLC19,541$247K<0.01%+7,58813F-HRTimelineGroup
Bridgefront Capital, LLC18,042$228K0.07%new13F-HRTimeline
Compagnie Lombard Odier SCmA18,000$228K<0.01%013F-HRTimeline
Quantbot Technologies LP17,513$222K0.01%new13F-HRTimeline
Point72 Hong Kong Ltd15,713$199K0.01%new13F-HRTimeline
Creative Planningin group Creative Planning15,527$196K<0.01%+98613F-HRTimelineGroup
SIMPLEX TRADING, LLC14,838$187K<0.01%+1,59113F-HRTimeline
AlphaQuest LLC14,652$185K0.01%-3,66513F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…14,365$182K<0.01%-29,68613F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC13,210$167K<0.01%+1,50513F-HRTimelineGroup
Headlands Technologies LLC12,699$161K0.01%new13F-HRTimeline
Quantinno Capital Management LP12,339$156K<0.01%new13F-HRTimeline
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.11,641$147K<0.01%13F-HR/ATimelineGroup
OPPENHEIMER & CO INCin group OPPENHEIMER ASSET MANAGEMENT …11,364$144K<0.01%-23,31013F-HRTimelineGroup
Arkadios Wealth Advisors10,104$128K<0.01%new13F-HRTimeline
FARALLON CAPITAL MANAGEMENT, L.L.C.10,000$126K<0.01%013F-HR/ATimeline
Eversept Partners, LP10,000$126K0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…9,582$121K<0.01%013F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…8,538$108K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…8,111$103K<0.01%-2,38413F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…7,869$99.5K0.03%+1,36613F-HRTimelineGroup
Quarry LP7,250$91.7K0.02%+25013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…5,740$73K<0.01%013F-HRTimeline
Sterling Capital Management LLC5,211$65.9K<0.01%+3,41413F-HRTimeline
CWM, LLCin group CWM, LLC3,504$44K<0.01%+47413F-HRTimelineGroup
KBC Group NVin group KBC Group NV3,135$40K<0.01%013F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.3,061$38.7K<0.01%+45613F-HRTimeline
AMALGAMATED BANK2,802$35K<0.01%013F-HRTimeline
Point72 Europe (London) LLP2,487$31.5K<0.01%new13F-HRTimeline
Steward Partners Investment Advisory, L…2,415$30.6K<0.01%+1,06513F-HRTimeline
Chung Wu Investment Group, LLC2,400$30.4K0.03%new13F-HRTimeline
GROUP ONE TRADING LLC1,959$24.8K<0.01%-16713F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP1,199$15.8K<0.01%013F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC949$12K<0.01%-7613F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.903$11.4K<0.01%+15013F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …846$11K<0.01%+21413F-HRTimelineGroup
Versant Capital Management, Inc859$10.9K<0.01%+81513F-HRTimeline
GAMMA Investing LLC649$8.21K<0.01%+13713F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.641$8.16K<0.01%+62113F-HRTimelineGroup
Aspect Partners, LLC605$7.65K<0.01%+58013F-HRTimeline
Allworth Financial LP495$6.26K<0.01%+2013F-HRTimeline
Arax Advisory Partners483$6.11K<0.01%+25313F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…460$5.82K<0.01%+25013F-HRTimelineGroup
Essential Partners LLC439$5.55K<0.01%+29613F-HRTimeline
GPS Wealth Strategies Group, LLC400$5.06K<0.01%013F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.371$5K<0.01%013F-HRTimelineGroup
FIRST HORIZON CORP390$4.93K<0.01%13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\361$4.57K<0.01%+1913F-HRTimelineGroup
Truvestments Capital LLC295$3.73K<0.01%013F-HRTimeline
SIGNATUREFD, LLC278$3.52K<0.01%-1213F-HRTimeline
MassMutual Private Wealth & Trust, FSB243$3.07K<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC165$2.09K<0.01%+4013F-HRTimeline
SBI Securities Co., Ltd.160$2.02K<0.01%+6113F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/150$1.9K<0.01%+9913F-HRTimelineGroup
Washington Trust Advisors, Inc.125$1.58K<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…97$1.23K<0.01%-5913F-HRTimelineGroup
IFP Advisors, Inc96$1.21K<0.01%+9613F-HR/ATimeline
Smartleaf Asset Management LLC83$1.03K<0.01%+7413F-HRTimeline
QUADRANT CAPITAL GROUP LLC67$848<0.01%new13F-HRTimeline
Parkside Financial Bank & Trust40$506<0.01%-1013F-HRTimeline
Clearstead Advisors, LLC37$469<0.01%new13F-HRTimeline

Events

  • Posner Brian S bought 2,500 DYN shares on 2026-10-02, Form 4 filed 2026-10-06. 0001193125-26-415584

    Accepted , ingested