13F

Stock

Dyne Therapeutics, Inc.

DYN · held by 227 managers

Reported value

$2.79B

Holders

227

+35 new · −45 exited

Holders’ est. mark

−$178M

Price effect on 185 books still in the name

Largest holder

$247.4M

JANUS HENDERSON GROUP PLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
JANUS HENDERSON GROUP PLC13.6M$247.4M−$19.5MCut−$24.2M
BlackRock, Inc.11.7M$212.1M−$16MCut−$6.77M
Atlas Venture Life Science Advisors, LLC9.13M$165.5M−$13.1MCut−$13.1M
Fidelity8.91M$161.5M−$9.39MAdded$33M
Orbis Allan Gray Ltd6.76M$122.6M−$6.87MAdded$28.7M
State Street6.65M$120.6M−$9.51MCut−$10.3M
VANGUARD CAPITAL MANAGEMENT LLC6.41M$116.1MHeld
PERCEPTIVE ADVISORS LLC4.67M$84.6M−$4.97MAdded$16.6M
FCPM III SERVICES B.V.4.64M$84.2M−$6.64MCut−$22.7M
TCG Crossover Management, LLC4.62M$83.7M−$6.6MCut−$6.6M
VANGUARD PORTFOLIO MANAGEMENT LLC4.16M$75.5MHeld
Vestal Point Capital, LP4M$72.5M−$171.6KAdded$70.2M
GEODE CAPITAL MANAGEMENT, LLC3.5M$63.5M−$4.67MCut−$301.8K
ARMISTICE CAPITAL, LLC3.18M$57.6M−$4.54MCut−$6M
Frazier Life Sciences Management, L.P.3.15M$57.2M−$4.51MCut−$4.51M
JPMORGAN CHASE & CO3.25M$55.6M−$8.04MCut−$13.8M
ORBIMED ADVISORS LLC2.92M$52.9M−$3.15MAdded$9.83M
Siren, L.L.C.2.23M$40.4M−$3.19MCut−$28.1M
VR ADVISER, LLC2.17M$39.4M−$3.11MCut−$3.11M
FRANKLIN RESOURCES INC2.01M$36.4M−$2.87MCut−$2.83M
Deep Track Capital, LP2M$36.3M−$2.86MCut−$15.6M
SAMLYN CAPITAL, LLC1.92M$34.9M−$2.14MAdded$5.65M
GOLDMAN SACHS GROUP INC1.72M$31.2M−$2.46MCut−$13.4M
BRAIDWELL LP1.68M$30.5M−$2.11MAdded$1.58M
Palo Alto Investors LP1.65M$30M−$2.11MAdded$1.17M
Sofinnova Investments, Inc.1.63M$29.6M−$2.34MCut−$14.5M
Vivo Capital, LLC1.56M$28.2M−$2.23MCut−$22.9M
BANK OF AMERICA CORP /DE/1.44M$26.2M−$1.26MAdded$8.9M
Aberdeen Group plc1.43M$25.9M−$1.58MAdded$4.26M
MPM BIOIMPACT LLC1.41M$25.5M−$2.01MCut−$1.96M
Logos Global Management LP1.4M$25.4M−$1.79MAdded$932K
Fiera Capital Corp1.38M$25MNew
Polar Capital Holdings Plc1.36M$24.6M−$1.81MCut−$182.5K
NORTHERN TRUST CORP1.2M$21.7M−$1.56MAdded$371.7K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC1.16M$21M−$1.65MCut−$1.52M
ADAGE CAPITAL PARTNERS GP, L.L.C.1M$18.1M−$1.43MCut−$83M
Rock Springs Capital Management LP972.2K$17.6M−$1.31MCut−$231.4K
Saturn V Capital Management LP966.6K$17.5M−$1.38MCut−$17.5M
DIMENSIONAL FUND ADVISORS LP951.6K$17.2M−$141.1KAdded$15.3M
VANGUARD FIDUCIARY TRUST CO947.4K$17.2MHeld
MORGAN STANLEY929K$16.8M−$1.33MCut−$6.89M
Squarepoint Ops LLC834.2K$15.1M−$364.9KAdded$10.1M
FRONTIER CAPITAL MANAGEMENT CO LLC821.8K$14.9M−$1.18MCut−$7.38M
BAKER BROS. ADVISORS LP813.4K$14.7M−$1.16MCut−$1.16M
Nuveen, LLC718.3K$13M−$888.5KAdded$870.6K
ArrowMark Colorado Holdings LLC673.9K$12.2M−$963.7KCut−$1.49M
Artisan Partners Limited Partnership619.5K$11.2M−$885.8KCut−$1.48M
Renaissance Technologies533.6K$9.67M−$673KAdded$468.4K
TD Asset Management Inc529.3K$9.6M−$600.3KAdded$1.39M
STEMPOINT CAPITAL LP506.1K$9.18M−$723.7KCut−$7.16M
Ensign Peak Advisors, Inc496.6K$9M−$710.1KCut−$710.1K
University of Wisconsin Foundation484.7K$8.79M−$596KAdded$636.8K
RAYMOND JAMES FINANCIAL INC451.6K$8.19M−$645.9KCut−$2.19M
WASATCH ADVISORS LP443.7K$8.04M−$582KAdded$83.6K
Clearbridge Investments, LLC403.2K$7.31M−$576.6KCut−$666K
Bank of New York Mellon Corp401.6K$7.28M−$505.5KAdded$366.9K
UBS Group AG380.6K$6.9M−$544.2KCut−$552.4K
NEW YORK STATE COMMON RETIREMENT FUND333.5K$6.05M−$113.3KAdded$4.5M
Fisher Asset Management, LLC323.1K$5.86M−$357.6KAdded$965.6K
Catalio Capital Management, LP283K$5.13M−$404.6KCut−$5.04M
Tetragon Partners GP Ltd258.1K$4.68M−$354.6KCut−$170.9K
Qube Research & Technologies Ltd253.2K$4.59M−$362KCut−$3.48M
Invesco Ltd.248.9K$4.51M−$196.9KAdded$1.82M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC239.3K$4.34M−$306.7KAdded$142.8K
Swiss National Bank228.1K$4.14M−$318.2KCut−$216.6K
DEUTSCHE BANK AG\221.1K$4.01M−$280.4KAdded$173.6K
Citadel201.1K$3.65M−$287.6KCut−$19.3M
SummitTX Capital, L.P.196.2K$3.56M−$280.5KCut−$1.2M
RHUMBLINE ADVISERS187.2K$3.39M−$250.3KCut−$29K
PDT Partners, LLC183K$3.32M−$261.7KCut−$261.7K
Rafferty Asset Management, LLC183K$3.32M−$261.7KCut−$1.26M
HighVista Strategies LLC182.9K$3.32M−$85.3KAdded$2.15M
Neo Ivy Capital Management168.8K$3.06M−$241.3KCut−$1.59M
BNP PARIBAS ASSET MANAGEMENT Holding S.A.164.9K$2.99M$2.99MAdded$2.99M
AMERIPRISE FINANCIAL INC163K$2.95M−$233.1KCut−$912.2K
SPHERA FUNDS MANAGEMENT LTD.160.6K$2.91M−$229.6KCut−$4.77M
MILLENNIUM MANAGEMENT LLC158.5K$2.87M−$226.7KCut−$14.8M
BURKEHILL GLOBAL MANAGEMENT, LP155K$2.81M−$221.6KCut−$221.7K
Darwin Wealth Management, LLC154.9K$2.81M−$164.8KAdded$553K
Woodline Partners LP149.4K$2.71M−$172.7KAdded$345.8K
ALLIANCEBERNSTEIN L.P.135.9K$2.66M−$1Added$32.9K
WELLS FARGO & COMPANY/MN145.5K$2.64M−$208.1KCut−$253.5K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM139.7K$2.53M−$172.7KAdded$169.2K
Aegis Wealth Management LLC135K$2.45M−$108.5KAdded$963.3K
SUSQUEHANNA INTERNATIONAL GROUP, LLP108.7K$1.97M−$140.4KAdded$50.1K
Legal & General Group Plc96.5K$1.75M−$137.9KCut−$561.6K
Man Group plc95.7K$1.73MNew
VOYA INVESTMENT MANAGEMENT LLC86.6K$1.57M−$123.6KCut−$120.5K
Icahn Capital84.2K$1.53M−$101KAdded$145.1K
MARSHALL WACE, LLP83.1K$1.51M−$118.9KCut−$11.7M
PROFUND ADVISORS LLC82.1K$1.49M−$117.5KCut−$207.6K
MOORE CAPITAL MANAGEMENT, LP78.8K$1.43MNew
TUDOR INVESTMENT CORP ET AL77K$1.4M−$110.2KCut−$1.49M
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.75.5K$1.35M−$109.6KCut−$32.8K
VANGUARD ASSET MANAGEMENT, Ltd73.3K$1.33MHeld
MetLife Investment Management, LLC72.8K$1.32M−$99.5KCut−$40.7K
CIBC WORLD MARKET INC.69.2K$1.25M−$98.3KCut−$90.2K
STATE OF WISCONSIN INVESTMENT BOARD68.6K$1.24M−$91KCut−$1.86K
ENVESTNET ASSET MANAGEMENT INC68.4K$1.24MNew
ROYAL BANK OF CANADA68.2K$1.24M−$26.8KAdded$873K
Y-Intercept (Hong Kong) Ltd65.2K$1.18M−$93.2KCut−$5.54M
MANUFACTURERS LIFE INSURANCE COMPANY, THE63.9K$1.16M−$91.3KCut−$162.8K
Blackstone Inc.57.1K$1.04MNew
Vanguard Global Advisers, LLC56.4K$1.02MHeld
FIFTH THIRD BANCORP54.2K$983.2KNew
VICTORY CAPITAL MANAGEMENT INC53K$960.5K−$73.6KCut−$46.5K
Zurcher Kantonalbank (Zurich Cantonalbank)52.2K$945.5K−$53.3KAdded$215.8K
ARCADIA INVESTMENT MANAGEMENT CORP/MI49.5K$897K−$68.5KCut−$39.5K
WELLINGTON MANAGEMENT GROUP LLP48.9K$886.2K−$67.3KCut−$35K
MANGROVE PARTNERS IM, LLC47.9K$868.9KNew
ADAR1 Capital Management, LLC47.5K$860.5K−$61KAdded$25.8K
SEI INVESTMENTS CO45K$815.4K−$64.3KCut−$333.9K
XTX Topco Ltd42.7K$774.3K−$61.1KCut−$334K
Russell Investments Group, Ltd.40K$725.9K−$57.3KCut−$3.81M
State of New Jersey Common Pension Fund D39.4K$714.1K−$45.1KAdded$96.8K
BNP PARIBAS FINANCIAL MARKETS39.2K$711.3K−$35KAdded$232K
CITIGROUP INC37.8K$685.3K−$52.4KCut−$31.8K
Brevan Howard Capital Management LP37.2K$674.7K−$53.2KCut−$2.42M
BARCLAYS PLC36.6K$663K−$52.3KCut−$8.11M
Police & Firemen's Retirement System of New Jersey36.3K$658.2K−$48KAdded$2.01K
SEVEN GRAND MANAGERS, LLC35K$634.5K−$50KCut−$50K
ARIZONA STATE RETIREMENT SYSTEM31.7K$574K−$44.9KCut−$40.5K
ASSETMARK, INC31.1K$563.2KNew
T. Rowe Price Investment Management, Inc.30.8M$558.1K−$25.1KAdded$215.1K
Creative Planning29.9K$542.9K−$28.3KAdded$156.2K
INTECH INVESTMENT MANAGEMENT LLC29.6K$536.6K−$42.3KCut−$329.6K
China Universal Asset Management Co., Ltd.29.2K$529.7K−$33.3KAdded$74.5K
Vanguard Investments Australia, Ltd.27.7K$502.7KHeld
Trexquant Investment LP27.6K$501.1K−$39.5KCut−$1.47M
Orion Porfolio Solutions, LLC27K$490.4KNew
ProShare Advisors LLC26.7K$483.8K−$38.2KCut−$82K
MARTINGALE ASSET MANAGEMENT L P25.7K$465.1K−$36KCut−$26.9K
KLP KAPITALFORVALTNING AS25.4K$460.5K−$36.3KCut−$36.3K
Elevate Capital Advisors, LLC24.6K$446K−$34.5KCut−$25.7K
Engineers Gate Manager LP24.4K$442.7K−$30.9KAdded$19.9K
Atom Investors LP24.1K$436.5KNew
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM24K$435.5K−$29.5KAdded$32.5K
E Fund Management Co., Ltd.23K$417KHeld
PRUDENTIAL FINANCIAL INC20.6K$373KNew
PSP Research LLC20K$362.6K−$28.6KCut−$58.6K
Pictet Asset Management Holding SA19.4K$351.2K−$18.5KAdded$97.7K
Quantinno Capital Management LP19.3K$349.9K−$18KAdded$103.5K
Z3 Capital Partners, LLC19.1K$346.7K−$21.5KAdded$52.4K
LPL Financial LLC18.4K$332.9K−$21.8KAdded$34.6K
Lion Point Capital, LP18K$326.3K−$25.7KCut−$25.7K
Arrowpoint Investment Partners (Singapore) Pte. Ltd.17.2K$312.1K−$20.6KAdded$30.7K
Mariner, LLC16.1K$291.7KNew
STIFEL FINANCIAL CORP16K$290.6KNew
Rockefeller Capital Management L.P.15.2K$274.9K−$20.4KCut−$4.21K
Allianz Asset Management GmbH15K$271.9K−$21.4KCut−$21.4K
TEACHER RETIREMENT SYSTEM OF TEXAS14.8K$268.3K−$21.2KCut−$46.1K
Virtus Investment Advisers, LLC14.2K$256.5K−$19.7KCut−$13.5K
Graham Capital Management, L.P.13.2K$238.8K−$18.8KCut−$468.6K
GUGGENHEIM CAPITAL LLC12.2K$221.8K−$15.8KAdded$5.29K
XPONANCE LLC12.2K$221.3KNew
Inspire Advisors, LLC11.8K$214.7KNew
Universal- Beteiligungs- und Servicegesellschaft mbH11.8K$214K−$16.9KCut−$67.7K
Tower Research Capital LLC (TRC)11.6K$210.8K−$1.04KAdded$196.5K
CAPSTONE INVESTMENT ADVISORS, LLC11.2K$203.4K−$16KCut−$45K
Ameritas Investment Partners, Inc.10.9K$197.7K−$14.9KCut−$6.5K
Jump Financial, LLC10.6K$192.4K−$15.2KCut−$497.3K
Scientech Research LLC10.6K$191.5KNew
Caitong International Asset Management Co., Ltd10.4K$188.6KNew
STEPHENS INC /AR/10.1K$183.4KNew
FARALLON CAPITAL MANAGEMENT LLC10K$181.3K−$14.3KCut−$14.3K
Inspire Investing, LLC9.3K$168.7KNew
Mirae Asset Global Investments Co., Ltd.8.59K$155.7K−$9.92KAdded$20K
Caption Management, LLC7.89K$143.1K−$3.58KAdded$94.2K
Steward Partners Investment Advisory, LLC6.88K$124.7K−$6.98KAdded$29.3K
Keating Financial Advisory Services, Inc.5.09K$92.3K−$7.15KCut−$5.46K
CWM, LLC4.43K$80.3K$72.9KAdded$80.2K
JONES FINANCIAL COMPANIES LLLP4.48K$76.8K−$2.9KAdded$53.3K
MARK SHEPTOFF FINANCIAL PLANNING, LLC4.15K$72.5KNew
IFP Advisors, Inc3.77K$68.3K−$136Added$66.4K
Sterling Capital Management LLC3.28K$59.5K−$4.69KCut−$41.6K
GF FUND MANAGEMENT CO. LTD.3.21K$58.2K−$4.01KAdded$3.28K
NISA INVESTMENT ADVISORS, LLC2.97K$53.9K−$4.25KCut−$151.5K
PRICE T ROWE ASSOCIATES INC /MD/2.33M$42.2K−$3.32KCut−$3.24K
Allworth Financial LP2.33K$42.2K−$800Added$31.3K
Chung Wu Investment Group, LLC2K$36.3K−$2.86KCut−$18.5K
SIMPLEX TRADING, LLC1.73K$31.4K−$2.48KCut−$148.2K
Hilton Head Capital Partners, LLC1.45K$26.2KNew
OSAIC HOLDINGS, INC.1.29K$23.4K−$908Added$11K
Kemnay Advisory Services Inc.1.19K$21.5KNew
Quantbot Technologies LP1.1K$19.9KNew
GROUP ONE TRADING LLC1.07K$19.5K−$930Added$6.74K
GAMMA Investing LLC1.05K$19K−$1.2KAdded$2.57K
US BANCORP \DE\965$17.5K−$572Added$9.67K
PNC Financial Services Group, Inc.921$16.7K−$597Added$8.52K
Versant Capital Management, Inc859$15.6K−$1.23KCut−$1.23K
Larson Financial Group LLC796$14.4K−$31Added$14K
Quarry LP750$13.6KNew
Smartleaf Asset Management LLC769$13.1K−$1.17KAdded$2.49K
Geneos Wealth Management Inc.691$12.5K−$197Added$9.83K
LOS ANGELES CAPITAL MANAGEMENT LLC612$11.1K−$3.32KCut−$311.4K
ALGERT GLOBAL LLC454.5K$8.24K−$389Added$2.93K
Essential Partners LLC445$8.07K−$636Cut−$636
FIRST HORIZON CORP409$7.42K−$546Cut−$57
Truvestments Capital LLC295$5.35K−$422Cut−$422
SIGNATUREFD, LLC278$5.04K−$398Cut−$1.22K
MassMutual Private Wealth & Trust, FSB243$4.41K−$347Cut−$347
Western Wealth Management, LLC240$4.35KNew
Aspect Partners, LLC225$4.08K−$322Cut−$322
ROTHSCHILD INVESTMENT LLC210$3.81K−$243Added$482
NATIONAL BANK OF CANADA /FI/200$3.62K−$286Cut−$286
SBI Securities Co., Ltd.159$2.88K−$214Cut−$51
WHITTIER TRUST CO OF NEVADA INC150$2.75KNew
Aster Capital Management (DIFC) Ltd226$2.36K−$2.06KCut−$81.9K
EverSource Wealth Advisors, LLC115$2.08K−$139Added$187
MAI Capital Management113$2.05KNew
SG Americas Securities, LLC112.6K$2.04K−$161Cut−$3.15K
QUADRANT CAPITAL GROUP LLC67$1.22K−$96Cut−$96
DekaBank Deutsche Girozentrale60K$1.09K−$769Cut−$769
Park Place Capital Corp47$852New
Cornerstone Financial Management LLC40$725−$57Cut−$57
Advisory Services Network, LLC29$526New
Bare Financial Services, Inc28$508New
Parallel Advisors, LLC27$490−$38Cut−$38
Fortitude Family Office, LLC25$453New
Farther Finance Advisors, LLC24$434−$26Added$101
STONERIDGE INVESTMENT PARTNERS LLC16.6K$301New
TWIN PEAKS WEALTH ADVISORS, LLC14$254New
True Wealth Design, LLC13$236−$19Cut−$19
CREATIVE FINANCIAL DESIGNS INC /ADV10$181New
Hughes Financial Services, LLC6$109New
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO5.74K$104−$8Cut−$8
KBC Group NV3.4K$62−$4Added$1

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.