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Disclosery

DYN DYNE THERAPEUTICS INC

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Stock (common), issuer CIK 1818794

236 managers (245 13F filers) reported a position in DYN shares at 2026-06-30, 190,615,539 shares in all. 44 filers opened a position and 28 filers sold out during the quarter.

Managers
236
13F filers
245
New
44
Added
89
Reduced
76
Sold out
28
Shares held by filers
190,615,539

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
T. Rowe Price Investment Management, In…30,912,287$687M0.45%+126,48613F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.12,404,330$276M<0.01%+704,46013F-HRTimelineGroup
Jupiter Topco LLCin group Janus Henderson11,997,738$267M0.11%13F-HRTimelineGroup
VANGUARD GROUP INCgroup of 7 filers holding11,520,878$256M-151,098Timeline
FMR LLCin group FMR LLC11,207,000$249M0.01%+2,298,02013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP7,458,263$166M<0.01%+804,51713F-HR/ATimelineGroup
Orbis Allan Gray Ltdin group Orbis Allan Gray Ltd7,006,542$156M0.53%+244,31113F-HRTimelineGroup
Atlas Venture Life Science Advisors, LLC6,800,099$151M17.14%-2,330,36613F-HRTimeline
TCG Crossover Management, LLC4,615,144$103M2.46%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/3,936,806$87.4M0.01%+1,608,43313F-HRTimeline
FCPM III SERVICES B.V.in group FCPM III SERVICES B.V.3,848,256$85.5M11.39%-796,13013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC3,743,427$83.2M<0.01%+239,31313F-HRTimelineGroup
Vestal Point Capital, LP3,375,000$75M1.75%-625,00013F-HRTimeline
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC3,235,684$71.9M1.36%+317,80013F-HRTimelineGroup
Frazier Life Sciences Management, L.P.3,153,082$70M1.53%013F-HRTimeline
ARMISTICE CAPITAL, LLC3,087,226$68.6M1.9%-87,88413F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO3,151,656$67.2M<0.01%-101,81713F-HRTimelineGroup
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC2,689,235$59.7M0.93%-1,979,60413F-HRTimelineGroup
Logos Global Management LP2,550,000$56.6M2.44%+1,150,00013F-HRTimeline
Franklin Resourcesgroup of 2 filers holding2,445,950$54.3M+33,643Timeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/2,233,398$49.6M<0.01%+790,08513F-HRTimelineGroup
Venrock Adviser, LLC2,173,913$48.3M1.46%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,157,195$47.9M0.01%+434,07913F-HRTimelineGroup
Siren, L.L.C.in group Siren, L.L.C.2,129,125$47.3M0.96%-100,00013F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,946,479$43.2M0.01%+994,89013F-HRTimelineGroup
MPM BIOIMPACT LLC1,922,093$42.7M2.6%+513,94113F-HRTimeline
SAMLYN CAPITAL, LLCin group SAMLYN CAPITAL, LLC1,754,708$39M0.65%-167,83513F-HRTimelineGroup
Sofinnova Investments, Inc.1,658,384$36.8M1.97%+24,48713F-HRTimeline
Palo Alto Investors LP1,647,521$36.6M5.06%-5,45113F-HR/ATimeline
Vivo Capital, LLC1,557,466$34.6M3.16%013F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc1,539,434$34.2M0.05%+109,05013F-HRTimelineGroup
Deep Track Capital, LP1,500,000$33.3M0.49%-500,00013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP1,488,917$33.1M0.03%+1,405,77013F-HRTimelineGroup
Polar Capital Holdings Plcin group Polar Capital Holdings Plc1,286,811$28.6M0.08%-72,35813F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,278,081$28.4M<0.01%+79,24313F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,202,203$26.7M<0.01%+43,81313F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,143,958$25.4M0.01%+942,81413F-HR/ATimelineGroup
Saturn V Capital Management LP1,057,493$23.5M3.37%+90,88413F-HRTimeline
NOVO HOLDINGS A/S960,394$21.3M1.24%new13F-HRTimeline
Rock Springs Capital Management LP942,154$20.9M1.02%-30,04413F-HRTimeline
BRAIDWELL LP921,598$20.5M0.76%-760,40013F-HRTimeline
FRONTIER CAPITAL MANAGEMENT CO LLC874,138$19.4M0.18%+52,28913F-HRTimeline
BAKER BROS. ADVISORS LPin group BAKER BROS. ADVISORS LP813,449$18.1M0.09%013F-HRTimelineGroup
Fiera Capital Corpin group Fiera Capital Corp789,989$17.5M0.06%-590,63113F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY746,200$16.6M<0.01%-182,80313F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding713,269$15.8M+93,423Timeline
Artisan Partners Limited Partnership659,786$14.7M0.02%+40,32913F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC576,350$12.8M<0.01%+124,70613F-HRTimelineGroup
TD Asset Management Inc548,112$12.2M0.01%+18,80013F-HRTimeline
ALGERT GLOBAL LLC506,273$11.2M0.13%+51,81013F-HRTimeline
WASATCH ADVISORS LP443,668$9.85M0.06%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC431,850$9.59M0.01%+273,30213F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp409,801$9.1M<0.01%+8,18513F-HRTimelineGroup
ArrowMark Colorado Holdings LLC397,221$8.82M0.37%-276,72813F-HRTimeline
Nuveen, LLCin group TIAA386,787$8.59M<0.01%-331,54613F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC360,572$8.01M0.01%-173,02813F-HRTimeline
Tetragon Partners GP Ltdin group Tetragon Partners GP Ltd356,657$7.92M1.29%+98,52513F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND355,953$7.91M0.01%+22,45613F-HRTimeline
Granahan Investment Management, LLC338,565$7.52M0.27%new13F-HRTimeline
University of Wisconsin Foundation313,559$6.96M5.51%-171,18613F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP305,794$6.79M0.15%+227,02913F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC300,074$6.66M0.01%-534,10213F-HRTimelineGroup
Fisher Asset Management, LLC298,505$6.63M<0.01%-24,54613F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC298,317$6.63M<0.01%+135,34513F-HRTimelineGroup
Ensign Peak Advisors, Inc289,730$6.43M0.01%-206,86013F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.245,278$5.45M0.01%new13F-HRTimelineGroup
Catalio Capital Management, LP244,929$5.44M1.02%-38,02513F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\242,392$5.38M<0.01%+21,26913F-HRTimelineGroup
Swiss National Bank232,000$5.15M<0.01%+3,90013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN220,664$4.9M<0.01%+75,15513F-HRTimelineGroup
SPHERA FUNDS MANAGEMENT LTD.in group SPHERA FUNDS MANAGEMENT LTD.199,594$4.43M0.63%+39,00013F-HRTimelineGroup
SummitTX Capital, L.P.194,643$4.32M0.11%-1,54513F-HRTimeline
CITIGROUP INCin group CITIGROUP INC187,915$4.17M<0.01%+150,11813F-HRTimelineGroup
RHUMBLINE ADVISERS183,799$4.08M<0.01%-3,42413F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC174,457$3.87M<0.01%+87,84813F-HRTimelineGroup
HighVista Strategies LLC171,961$3.82M0.87%-10,96813F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC167,082$3.71M0.02%new13F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.164,598$3.66M<0.01%-84,34313F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …157,916$3.51M<0.01%-6,97113F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd156,203$3.47M0.07%+91,04513F-HRTimeline
AXXCESS WEALTH MANAGEMENT, LLC155,270$3.45M0.05%new13F-HRTimeline
Darwin Wealth Management, LLC155,270$3.45M0.94%+40813F-HRTimeline
Aegis Wealth Management LLC150,030$3.33M1.57%+15,00013F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…150,000$3.33M<0.01%-850,00013F-HRTimelineGroup
Woodline Partners LP149,388$3.32M0.01%013F-HRTimeline
ALLIANCEBERNSTEIN L.P.172,080$3.12M<0.01%+36,14013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…135,147$3M<0.01%-4,51613F-HR/ATimeline
Schonfeld Strategic Advisors LLC134,752$2.99M0.02%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd125,786$2.79M0.04%+83,07613F-HRTimelineGroup
Jain Global LLC116,341$2.58M0.03%new13F-HRTimeline
Rafferty Asset Management, LLC115,102$2.56M0.01%-67,87513F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…105,553$2.34M<0.01%+65,51713F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc97,940$2.18M<0.01%+1,47813F-HRTimelineGroup
SG Americas Securities, LLC97,648$2.17M<0.01%-14,97813F-HRTimeline
FIDEURAM - INTESA SANPAOLO PRIVATE BANK…87,069$1.93M0.06%new13F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC84,054$1.87M<0.01%-18413F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding83,588$1.84M-469Timeline
MetLife Investment Management, LLCin group MetLife Investment Management…79,775$1.77M0.01%+6,93413F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …78,622$1.75M<0.01%+14,77213F-HR/ATimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…75,859$1.68M<0.01%+21,63013F-HRTimelineGroup
CIBC WORLD MARKET INC.75,783$1.68M<0.01%+6,56813F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD69,702$1.55M<0.01%+1,13113F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC66,583$1.48M<0.01%-1,81013F-HR/ATimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA65,015$1.44M<0.01%-3,17313F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.60,161$1.34M<0.01%new13F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…58,947$1.31M<0.01%+6,79513F-HRTimeline
PROFUND ADVISORS LLC58,810$1.31M0.04%-23,32813F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC54,498$1.21M<0.01%+1,51813F-HRTimeline
Handelsbanken Fonder AB53,200$1.18M<0.01%new13F-HRTimeline
FLPUTNAM INVESTMENT MANAGEMENT CO52,975$1.18M0.01%new13F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…52,427$1.16M<0.01%+3,54513F-HRTimelineGroup
Quantinno Capital Management LP51,489$1.14M<0.01%+32,19213F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC50,000$1.11M0.02%new13F-HRTimeline
NORGES BANK49,319$1.1M<0.01%new13F-HRTimeline
DekaBank Deutsche Girozentrale60,000$1.07M<0.01%013F-HRTimeline
MANGROVE PARTNERS IM, LLC47,927$1.06M0.07%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…47,127$1.05M<0.01%-61,59713F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO44,054$978K<0.01%-91913F-HRTimelineGroup
Atom Investors LP43,097$957K0.09%+19,01913F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC42,821$951K0.04%-4,64213F-HRTimelineGroup
Police & Firemen's Retirement System of…40,235$894K0.01%+3,93113F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…37,396$831K<0.01%-1,99413F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…37,214$827K0.01%013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC37,180$826K<0.01%+61113F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…35,537$789K<0.01%+11,51413F-HRTimeline
SEVEN GRAND MANAGERS, LLC35,000$777K0.03%013F-HRTimeline
Creative Planningin group Creative Planning34,857$774K<0.01%+4,91213F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM31,912$709K<0.01%+25413F-HRTimeline
Neo Ivy Capital Management31,440$698K0.16%-137,31313F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC30,600$680K0.01%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC29,553$656K0.01%-4713F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC28,621$636K<0.01%-2,44113F-HRTimelineGroup
Orion Porfolio Solutions, LLC26,883$597K<0.01%-16513F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE26,700$593K<0.01%+11,70013F-HR/ATimelineGroup
China Universal Asset Management Co., L…26,310$584K0.03%-2,90913F-HRTimeline
KLP KAPITALFORVALTNING AS25,400$564K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS23,786$528K<0.01%-15,44713F-HRTimelineGroup
ProShare Advisors LLC23,283$517K<0.01%-3,40013F-HRTimeline
Blackstone Inc.in group Blackstone Inc.22,578$501K<0.01%-34,52913F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC22,480$499K<0.01%+1,90513F-HRTimelineGroup
CenterBook Partners LP21,538$478K0.02%new13F-HRTimeline
Elevate Capital Advisors, LLC20,435$454K0.25%-4,16513F-HRTimeline
LPL Financial LLC20,058$445K<0.01%+1,69413F-HRTimeline
PSP Research LLC20,000$444K0.24%013F-HRTimeline
Pavaki Capital Management LLC20,000$444K0.25%013F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…19,372$430K<0.01%013F-HRTimelineGroup
Z3 Capital Partners, LLC18,925$420K0.09%-20013F-HRTimeline
Lion Point Capital, LP18,000$400K1.91%013F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…17,988$400K0.09%+3,83813F-HRTimelineGroup
E Fund Management Co., Ltd.16,230$360K0.01%-6,77113F-HRTimeline
BIT Capital GmbH15,700$349K0.01%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP14,952$332K<0.01%-1,07613F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…14,278$317K<0.01%-88313F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP14,178$315K<0.01%new13F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC13,904$309K<0.01%-2,18513F-HRTimelineGroup
NewEdge Advisors, LLC13,522$300K<0.01%new13F-HRTimeline
XPONANCE LLC13,436$298K<0.01%+1,22813F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS13,358$297K<0.01%-1,43913F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…12,381$275K0.01%+1,47413F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …12,111$269K<0.01%+31013F-HRTimelineGroup
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC11,051$245K<0.01%-1,18513F-HRTimelineGroup
TWO SIGMA SECURITIES, LLC10,015$222K0.02%new13F-HRTimeline
Janney Montgomery Scott LLC9,762$217K<0.01%new13F-HRTimeline
Caption Management, LLC7,894$175K0.01%013F-HRTimeline
Steward Partners Investment Advisory, L…6,944$154K<0.01%+6413F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…5,740$127K<0.01%013F-HRTimeline
Persistent Asset Partners Ltd5,569$124K0.04%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,187$115K<0.01%-6,44113F-HRTimelineGroup
Keating Financial Advisory Services, In…5,112$114K0.01%+1913F-HRTimeline
Nykredit A/Sin group Nykredit A/S5,102$113K<0.01%13F-HR/ATimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP4,928$103K<0.01%+44813F-HRTimelineGroup
MARK SHEPTOFF FINANCIAL PLANNING, LLC4,250$94.4K0.05%+10013F-HRTimeline
IFP Advisors, Inc3,756$83.4K<0.01%-1013F-HRTimeline
GF FUND MANAGEMENT CO. LTD.3,485$77.4K<0.01%+27713F-HRTimeline
KBC Group NVin group KBC Group NV3,405$76K<0.01%013F-HRTimelineGroup
Hilton Head Capital Partners, LLC3,420$76K0.04%+1,97413F-HRTimeline
NISA INVESTMENT ADVISORS, LLC3,387$75.2K<0.01%+41513F-HRTimeline
Allworth Financial LP2,787$61.9K<0.01%+45913F-HRTimeline
SIMPLEX TRADING, LLC2,007$44.6K<0.01%+27313F-HRTimeline
Chung Wu Investment Group, LLC2,000$44.4K0.03%013F-HRTimeline
Sterling Capital Management LLC1,960$43.5K<0.01%-1,32113F-HRTimeline
Pacer Advisors, Inc.1,922$43K<0.01%new13F-HRTimeline
Kemnay Advisory Services Inc.1,303$28.9K<0.01%+11713F-HRTimeline
SUMMIT SECURITIES GROUP LLC1,268$28.2K0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,239$27.5K<0.01%-5113F-HRTimelineGroup
GAMMA Investing LLC1,153$25.6K<0.01%+10413F-HRTimeline
Arax Advisory Partners997$22.1K<0.01%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\972$21.6K<0.01%+713F-HRTimelineGroup
Versant Capital Management, Inc859$19.1K<0.01%013F-HRTimeline
State of Wyoming804$17.9K<0.01%new13F-HRTimeline
Larson Financial Group LLC796$17.7K<0.01%013F-HRTimeline
COMPASS FINANCIAL MANAGEMENT LLC724$17.5K<0.01%13F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.747$16.6K<0.01%new13F-HRTimelineGroup
Smartleaf Asset Management LLC769$16.3K<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…537$11.9K<0.01%-38413F-HRTimelineGroup
Inspire Investing, LLCgroup of 2 filers holding468$10.4K-20,680Timeline
SIGNATUREFD, LLC420$9.33K<0.01%+14213F-HRTimeline
GROUP ONE TRADING LLC373$8.28K<0.01%-70013F-HRTimeline
FIRST HORIZON CORP360$8K<0.01%-4913F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC322$7.15K<0.01%-29013F-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