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Disclosery

DYN DYNE THERAPEUTICS INC

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Stock (common), issuer CIK 1818794

230 managers (233 13F filers) reported a position in DYN shares at 2025-12-31, 177,949,406 shares in all. 52 filers opened a position and 28 filers sold out during the quarter.

Managers
230
13F filers
233
New
52
Added
96
Reduced
58
Sold out
28
Shares held by filers
177,949,406

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
T. Rowe Price Investment Management, In…17,540,089$343M0.22%+14,727,66713F-HR/ATimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson13,887,722$272M0.12%-857,78313F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC11,215,565$219M<0.01%+1,455,15113F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.11,190,838$219M<0.01%+1,555,92913F-HRTimelineGroup
Atlas Venture Life Science Advisors, LLC9,130,465$179M20.64%013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP6,692,745$131M<0.01%+1,423,82813F-HRTimelineGroup
FMR LLCin group FMR LLC6,569,921$129M0.01%+1,168,00513F-HRTimelineGroup
FCPM III SERVICES B.V.in group FCPM III SERVICES B.V.5,462,846$107M14.01%013F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…5,172,000$101M0.15%+1,618,00013F-HRTimelineGroup
Orbis Allan Gray Ltdin group Orbis Allan Gray Ltd4,801,928$93.9M0.39%new13F-HRTimelineGroup
TCG Crossover Management, LLC4,615,144$90.3M2.99%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO3,549,909$69.4M<0.01%+184,66413F-HRTimelineGroup
Siren, L.L.C.in group Siren, L.L.C.3,502,941$68.5M2.04%-1,226,23313F-HRTimelineGroup
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC3,478,944$68M1.25%+2,938,50013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC3,263,429$63.8M<0.01%+395,82413F-HRTimelineGroup
ARMISTICE CAPITAL, LLC3,249,708$63.6M1.56%+185,70813F-HRTimeline
Frazier Life Sciences Management, L.P.3,153,082$61.7M1.66%+434,97713F-HRTimeline
Deep Track Capital, LP2,650,000$51.8M1.18%+650,00013F-HRTimeline
Vivo Capital, LLC2,614,960$51.1M3.31%013F-HRTimeline
Franklin Resourcesgroup of 2 filers holding2,414,432$47.2M+1,015,902Timeline
PRICE T ROWE ASSOCIATES INC /MD/2,323,789$45.5M<0.01%+925,70213F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,283,191$44.7M0.01%+382,97613F-HR/ATimelineGroup
Sofinnova Investments, Inc.2,254,161$44.1M1.9%+1,268,33313F-HRTimeline
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC2,202,184$43.1M0.88%-112,00013F-HRTimelineGroup
Venrock Adviser, LLC2,173,913$42.5M2.1%013F-HRTimeline
Saturn V Capital Management LP1,788,616$35M6.42%-885,85313F-HRTimeline
SAMLYN CAPITAL, LLCin group SAMLYN CAPITAL, LLC1,493,075$29.2M0.47%new13F-HRTimelineGroup
BRAIDWELL LP1,478,329$28.9M0.92%-1,252,15213F-HRTimeline
Palo Alto Investors LP1,472,197$28.8M4.01%+209,52313F-HRTimeline
MPM BIOIMPACT LLC1,405,388$27.5M3.15%-40,97313F-HRTimeline
Polar Capital Holdings Plcin group Polar Capital Holdings Plc1,269,131$24.8M0.11%+739,74313F-HRTimelineGroup
Logos Global Management LP1,250,000$24.4M1.63%-1,150,00013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,213,559$23.7M<0.01%-205,44813F-HR/ATimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,171,624$22.9M0.02%-2,241,81113F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,151,325$22.5M<0.01%+144,13113F-HRTimelineGroup
FRONTIER CAPITAL MANAGEMENT CO LLC1,138,868$22.3M0.24%+227,94913F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc1,108,145$21.7M0.03%+551,41213F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,092,191$21.4M<0.01%+54,62313F-HRTimelineGroup
Candriam S.C.A.1,057,263$20.7M0.1%+223,34113F-HR/ATimeline
Rock Springs Capital Management LP912,955$17.9M0.92%+88,89413F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC904,389$17.7M0.01%+490,44913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/882,922$17.3M<0.01%+121,81013F-HRTimelineGroup
STEMPOINT CAPITAL LP835,200$16.3M2.8%+360,58813F-HRTimeline
BAKER BROS. ADVISORS LPin group BAKER BROS. ADVISORS LP813,449$15.9M0.09%new13F-HRTimelineGroup
ArrowMark Colorado Holdings LLC700,653$13.7M0.3%-85,26213F-HRTimeline
EVENTIDE ASSET MANAGEMENT, LLC680,305$13.3M0.21%new13F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP676,979$13.2M0.01%-2,336,39813F-HRTimelineGroup
Artisan Partners Limited Partnership649,691$12.7M0.02%new13F-HRTimeline
Nuveen, LLCin group TIAA621,310$12.2M<0.01%+276,41313F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding595,469$11.6M+16,651Timeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC530,338$10.4M<0.01%+453,42613F-HRTimelineGroup
Catalio Capital Management, LP519,715$10.2M1.8%new13F-HR/ATimeline
Ensign Peak Advisors, Inc496,590$9.71M0.02%+476,44013F-HR/ATimeline
RENAISSANCE TECHNOLOGIES LLC470,645$9.21M0.01%+125,14513F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.464,797$9.09M0.02%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC448,658$8.78M<0.01%-32,04313F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management432,986$8.47M0.02%new13F-HRTimelineGroup
TD Asset Management Inc419,756$8.21M0.01%+399,37413F-HRTimeline
University of Wisconsin Foundation416,750$8.15M6.85%-101,00013F-HRTimeline
Qube Research & Technologies Ltd412,440$8.07M0.01%-417,32913F-HRTimeline
WASATCH ADVISORS LP406,960$7.96M0.05%-116,96413F-HRTimeline
SPHERA FUNDS MANAGEMENT LTD.in group SPHERA FUNDS MANAGEMENT LTD.392,894$7.69M1.61%-33,62413F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP386,953$7.43M0.01%+111,35713F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp353,497$6.91M<0.01%+36,13313F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd343,726$6.72M0.15%new13F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.329,345$6.44M0.01%-1,388,46213F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD284,000$5.56M<0.01%013F-HRTimeline
ALGERT GLOBAL LLC271,303$5.31M0.08%-243,82913F-HR/ATimeline
SG Americas Securities, LLC265,384$5.19M0.01%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC255,160$4.99M0.01%+207,56813F-HRTimelineGroup
Fisher Asset Management, LLC250,065$4.89M<0.01%new13F-HRTimeline
Tetragon Partners GP Ltdin group Tetragon Partners GP Ltd247,997$4.85M1.02%+24,81613F-HRTimelineGroup
SummitTX Capital, L.P.243,276$4.76M0.14%+110,37613F-HRTimeline
Neo Ivy Capital Management237,467$4.64M0.73%new13F-HRTimeline
Rafferty Asset Management, LLC233,835$4.57M0.02%+20,62413F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…232,013$4.54M<0.01%+118,08113F-HRTimelineGroup
Swiss National Bank222,500$4.35M<0.01%+44,20013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC197,691$3.87M<0.01%-224,96513F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\196,080$3.84M<0.01%+70,19413F-HRTimelineGroup
PDT Partners, LLC182,986$3.58M0.23%-18,25413F-HRTimeline
RHUMBLINE ADVISERS175,020$3.42M<0.01%+7,20013F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC168,304$3.29M<0.01%+136,91913F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …165,692$3.24M<0.01%+164,84613F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC165,482$3.24M<0.01%-155,94413F-HRTimelineGroup
Jain Global LLC162,047$3.17M0.03%-482,03513F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…157,969$3.09M0.06%+98,66713F-HRTimelineGroup
First Light Asset Management, LLC155,231$3.04M0.23%new13F-HRTimeline
Burkehill Global Management, LP155,000$3.03M0.2%+35,00013F-HRTimeline
Lisanti Capital Growth, LLC154,445$3.02M0.72%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN147,831$2.89M<0.01%+60,71013F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL147,621$2.89M0.02%new13F-HRTimeline
Invesco Ltd.in group Invesco Ltd.137,684$2.69M<0.01%+20,12113F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.134,260$2.63M<0.01%+27,58013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…120,800$2.36M<0.01%+31,64013F-HRTimeline
Woodline Partners LP120,788$2.36M0.01%new13F-HRTimeline
Vestal Point Capital, LP120,000$2.35M0.09%-2,655,00013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc118,122$2.31M<0.01%+10,14713F-HRTimelineGroup
Darwin Wealth Management, LLC115,267$2.25M0.7%-58,25013F-HRTimeline
Monashee Investment Management LLC114,525$2.24M1.26%new13F-HRTimeline
AXXCESS WEALTH MANAGEMENT, LLC113,818$2.23M0.04%new13F-HR/ATimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.103,334$2.02M<0.01%new13F-HRTimelineGroup
Trexquant Investment LP100,645$1.97M0.02%-244,81713F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…98,215$1.92M<0.01%-19,55513F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP98,074$1.92M<0.01%new13F-HRTimelineGroup
DekaBank Deutsche Girozentrale60,000$1.86M<0.01%013F-HRTimeline
PROFUND ADVISORS LLC86,746$1.7M0.05%+40,76613F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC86,438$1.69M<0.01%-12,26313F-HRTimelineGroup
COMERICA BANK85,339$1.67M0.01%-1,15713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND79,262$1.55M<0.01%+44,58913F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding78,131$1.52M+10,996Timeline
Aegis Wealth Management LLC75,908$1.48M0.84%+26,00013F-HRTimeline
HRT FINANCIAL LP75,394$1.47M<0.01%new13F-HRTimeline
Headlands Technologies LLC75,235$1.47M0.12%+62,53613F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC70,659$1.38M<0.01%-71,21613F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC70,323$1.38M<0.01%-211,01713F-HRTimelineGroup
Seven Fleet Capital Management LP70,180$1.37M0.93%13F-HR/ATimeline
MetLife Investment Management, LLCin group MetLife Investment Management…69,599$1.36M0.01%+5,37813F-HRTimelineGroup
CIBC WORLD MARKET INC.68,766$1.35M<0.01%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …67,507$1.32M<0.01%+10,16413F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD63,653$1.25M<0.01%+23,69413F-HRTimeline
HighVista Strategies LLC59,643$1.17M0.3%new13F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO58,755$1.15M<0.01%new13F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd56,661$1.11M0.03%+27,44613F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC51,484$1.01M<0.01%+1,38213F-HRTimeline
NORGES BANK49,319$965K<0.01%new13F-HRTimeline
ARCADIA INVESTMENT MANAGEMENT CORP/MI47,875$936K0.15%-1,35013F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…47,096$921K<0.01%+5,18113F-HRTimelineGroup
J. Goldman & Co LP46,010$900K0.03%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC44,288$866K0.01%-8,76213F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC42,674$835K0.06%+5,01113F-HR/ATimelineGroup
Legato Capital Management LLC42,665$835K0.07%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…37,307$730K<0.01%+3,99313F-HRTimeline
CITIGROUP INCin group CITIGROUP INC36,657$717K<0.01%+3,27213F-HRTimelineGroup
Graham Capital Management, L.P.36,167$707K0.02%-7,00913F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC35,260$690K0.01%-64,62413F-HRTimelineGroup
SEVEN GRAND MANAGERS, LLC35,000$685K0.05%new13F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…34,000$665K0.02%+14,00013F-HRTimelineGroup
Police & Firemen's Retirement System of…33,547$656K0.01%+3,62813F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…31,562$617K<0.01%new13F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP31,422$615K0.05%-3,76813F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM31,416$614K<0.01%+4,21213F-HRTimeline
OPTIMIZE FINANCIAL INC.30,310$593K0.3%+43613F-HRTimeline
ProShare Advisors LLC28,926$566K<0.01%+5,18513F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC27,762$543K<0.01%new13F-HRTimelineGroup
KLP KAPITALFORVALTNING AS25,400$497K<0.01%+5,60013F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P25,152$492K0.01%-1,89813F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS24,506$479K<0.01%-111,87913F-HRTimelineGroup
Elevate Capital Advisors, LLC24,114$472K0.31%new13F-HRTimeline
China Universal Asset Management Co., L…23,273$455K0.03%-1,66413F-HRTimeline
Engineers Gate Manager LP21,619$423K0.01%-81,37213F-HRTimeline
PSP Research LLC21,535$421K0.37%13F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd21,296$417K0.01%-56,77613F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…20,605$403K<0.01%013F-HRTimeline
Creative Planningin group Creative Planning19,771$387K<0.01%+4,24413F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA18,547$363K<0.01%-524,61913F-HRTimelineGroup
Lion Point Capital, LP18,000$352K1.82%new13F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC13,692$322K<0.01%new13F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.16,450$322K0.05%new13F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS16,074$314K<0.01%-6,37413F-HRTimeline
AlphaQuest LLC15,963$312K0.02%+1,31113F-HRTimeline
LPL Financial LLC15,250$298K<0.01%new13F-HRTimeline
Z3 Capital Partners, LLC15,050$294K0.07%13F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE15,000$293K<0.01%new13F-HRTimelineGroup
BIT Capital GmbH15,000$293K0.01%new13F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …14,399$282K<0.01%new13F-HRTimelineGroup
Arrowpoint Investment Partners (Singapo…in group Arrowpoint Investment Partner…14,383$281K0.04%new13F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…14,365$281K<0.01%013F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…14,268$279K<0.01%+5,73013F-HR/ATimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…13,806$270K0.07%+5,93713F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…12,963$254K<0.01%new13F-HRTimelineGroup
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…12,700$248K<0.01%new13F-HRTimelineGroup
Quantinno Capital Management LP12,593$246K<0.01%+25413F-HRTimeline
Bridgefront Capital, LLC12,018$235K0.06%-6,02413F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC11,071$217K<0.01%-36,60913F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC10,499$205K<0.01%+9,55013F-HRTimeline
Verition Fund Management LLC10,453$204K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…10,442$204K0.01%+86013F-HRTimelineGroup
FARALLON CAPITAL MANAGEMENT, L.L.C.10,000$196K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Soleus Capital Management, L.P.10,000$196K0.01%new13F-HRTimeline
SIMPLEX TRADING, LLC9,186$180K0.01%-5,65213F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…5,740$112K<0.01%013F-HRTimeline
Sterling Capital Management LLC5,166$101K<0.01%-4513F-HRTimeline
Keating Financial Advisory Services, In…5,000$97.8K0.01%13F-HRTimeline
Steward Partners Investment Advisory, L…4,880$95.5K<0.01%+2,46513F-HRTimeline
Aster Capital Management (DIFC) Ltd4,310$84.3K0.04%new13F-HRTimeline
CWM, LLCin group CWM, LLC4,028$79K<0.01%+52413F-HRTimelineGroup
AMALGAMATED BANK3,889$76K<0.01%+1,08713F-HRTimeline
KBC Group NVin group KBC Group NV3,135$61K<0.01%013F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.2,806$54.9K<0.01%-25513F-HRTimeline
Chung Wu Investment Group, LLC2,800$54.8K0.04%+40013F-HRTimeline
STRS OHIO2,600$50.9K<0.01%new13F-HRTimeline
Caption Management, LLC2,500$48.9K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP1,199$23.5K<0.01%013F-HRTimelineGroup
Versant Capital Management, Inc859$16.8K<0.01%013F-HRTimeline
GAMMA Investing LLC841$16.4K<0.01%+19213F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…730$14.3K<0.01%-7,38113F-HRTimelineGroup
GROUP ONE TRADING LLC650$12.7K<0.01%-1,30913F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.635$12.4K<0.01%-613F-HRTimelineGroup
Allworth Financial LP559$10.9K<0.01%+6413F-HRTimeline
Smartleaf Asset Management LLC555$10.7K<0.01%+47213F-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