Who owns Dianthus Therapeutics (DNTH)
Which tracked institutional funds hold DNTH, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See DNTH company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
131 tracked funds added or opened DNTH while 62 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
DNTH’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes DNTH more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in DNTH divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 259 tracked filers holding DNTH, 169 increased or opened the position and 110 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in DNTH between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 24
- WESTFIELD CAPITAL MANAGEMENT CO LP$31M
- Assenagon Asset Management S.A.$27M
- EMERALD ADVISERS, LLC$24M
- TimesSquare Capital Management, LLC$16M
- Eagle Health Investments LP$13M
- EMERALD MUTUAL FUND ADVISERS TRUST$13M
Full exits 24
- RA CAPITAL MANAGEMENT, L.P.$219M
- T. Rowe Price Investment Management, Inc.$108M
- FARALLON CAPITAL MANAGEMENT LLC$70M
- Point72 Asset Management, L.P.$54M
- LORD, ABBETT & CO. LLC$25M
- Freestone Grove Partners LP$20M
Largest adds
- FMR LLC$153M
- PRICE T ROWE ASSOCIATES INC /MD/$149M
- BlackRock, Inc.$135M
- STATE STREET CORP$112M
- WELLINGTON MANAGEMENT GROUP LLP$98M
- JENNISON ASSOCIATES LLC$59M
Largest trims
- Catalio Capital Management, LP$44M
- CITADEL ADVISORS LLC$40M
- Sio Capital Management, LLC$25M
- BALYASNY ASSET MANAGEMENT L.P.$24M
- BNP PARIBAS FINANCIAL MARKETS$19M
- BRAIDWELL LP$18M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 8,199,893 | $799M | 13.8% | 2026-Q2 |
| BlackRock, Inc. added | 4,123,822 | $402M | 6.9% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 3,229,882 | $315M | 5.4% | 2026-Q2 |
| Fairmount Funds Management LLC | 2,537,191 | $247M | 4.3% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 2,514,946 | $245M | 4.2% | 2026-Q2 |
| STATE STREET CORP added | 2,357,440 | $230M | 4.0% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,159,568 | $211M | 3.6% | 2026-Q2 |
| Avidity Partners Management LP | 2,104,184 | $205M | 3.5% | 2026-Q2 |
| Octagon Capital Advisors LP trimmed | 1,841,667 | $180M | 3.1% | 2026-Q2 |
| TCG Crossover Management, LLC | 1,676,624 | $163M | 2.8% | 2026-Q2 |
| FRED ALGER MANAGEMENT, LLC added | 1,302,493 | $127M | 2.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,258,502 | $123M | 2.1% | 2026-Q2 |
| Venrock Adviser, LLC | 1,180,000 | $115M | 2.0% | 2026-Q2 |
| UBS Group AG added | 1,140,260 | $111M | 1.9% | 2026-Q2 |
| DEERFIELD MANAGEMENT COMPANY, L.P. added | 1,125,313 | $110M | 1.9% | 2026-Q2 |
| JENNISON ASSOCIATES LLC added | 1,021,763 | $100M | 1.7% | 2026-Q2 |
| Polar Capital Holdings Plc trimmed | 1,018,726 | $99M | 1.7% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 974,911 | $95M | 1.6% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 968,983 | $94M | 1.6% | 2026-Q2 |
| BAKER BROS. ADVISORS LP | 852,164 | $83M | 1.4% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 834,150 | $70M | 1.2% | 2026-Q2 |
| Logos Global Management LP added | 800,000 | $78M | 1.3% | 2026-Q2 |
| Cormorant Asset Management, LP trimmed | 750,000 | $73M | 1.3% | 2026-Q2 |
| BRAIDWELL LP trimmed | 594,562 | $58M | 1.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 570,115 | $56M | 1.0% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 531,999 | $52M | 0.9% | 2026-Q2 |
| Woodline Partners LP added | 500,548 | $49M | 0.8% | 2026-Q2 |
| BARCLAYS PLC added | 431,753 | $42M | 0.7% | 2026-Q2 |
| MPM BIOIMPACT LLC trimmed | 420,002 | $41M | 0.7% | 2026-Q2 |
| NORTHERN TRUST CORP added | 411,791 | $40M | 0.7% | 2026-Q2 |
| Affinity Asset Advisors, LLC added | 400,000 | $39M | 0.7% | 2026-Q2 |
| SILVERARC CAPITAL MANAGEMENT, LLC trimmed | 390,000 | $38M | 0.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 382,161 | $37M | 0.6% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 365,963 | $36M | 0.6% | 2026-Q2 |
| Bain Capital Life Sciences Investors, LLC | 362,470 | $35M | 0.6% | 2026-Q2 |
| Spruce Street Capital LP trimmed | 354,816 | $35M | 0.6% | 2026-Q2 |
| Vivo Capital, LLC | 353,998 | $35M | 0.6% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 321,503 | $31M | 0.5% | 2026-Q2 |
| WESTFIELD CAPITAL MANAGEMENT CO LP new | 314,914 | $31M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 302,482 | $29M | 0.5% | 2026-Q2 |
| Driehaus Capital Management LLC trimmed | 295,266 | $29M | 0.5% | 2026-Q2 |
| First Turn Management, LLC added | 285,771 | $28M | 0.5% | 2026-Q2 |
| Assenagon Asset Management S.A. new | 280,649 | $27M | 0.5% | 2026-Q2 |
| TANG CAPITAL MANAGEMENT LLC | 264,692 | $26M | 0.4% | 2026-Q2 |
| Artisan Partners Limited Partnership trimmed | 258,269 | $25M | 0.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 256,833 | $25M | 0.4% | 2026-Q2 |
| Bank of New York Mellon Corp added | 256,393 | $25M | 0.4% | 2026-Q2 |
| RTW INVESTMENTS, LP | 248,063 | $24M | 0.4% | 2026-Q2 |
| EMERALD ADVISERS, LLC new | 247,805 | $24M | 0.4% | 2026-Q2 |
| Pictet Asset Management Holding SA added | 247,295 | $24M | 0.4% | 2026-Q2 |
| TD Asset Management Inc added | 225,334 | $22M | 0.4% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC | 225,261 | $22M | 0.4% | 2026-Q2 |
| LMR Partners LLP added | 223,995 | $22M | 0.4% | 2026-Q2 |
| Candriam S.C.A. trimmed | 204,214 | $20M | 0.3% | 2026-Q2 |
| STEMPOINT CAPITAL LP added | 200,851 | $20M | 0.3% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 196,924 | $19M | 0.3% | 2026-Q2 |
| SAMLYN CAPITAL, LLC trimmed | 196,326 | $19M | 0.3% | 2026-Q2 |
| Nicholas Investment Partners, LP added | 186,769 | $18M | 0.3% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 185,000 | $18M | 0.3% | 2026-Q2 |
| Ensign Peak Advisors, Inc trimmed | 174,187 | $17M | 0.3% | 2026-Q2 |
| TimesSquare Capital Management, LLC new | 166,357 | $16M | 0.3% | 2026-Q2 |
| Atika Capital Management LLC added | 165,000 | $16M | 0.3% | 2026-Q2 |
| Artia Global Partners LP | 162,990 | $16M | 0.3% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 162,005 | $16M | 0.3% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 157,574 | $15M | 0.3% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 150,592 | $15M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 143,431 | $14M | 0.2% | 2026-Q2 |
| Eagle Health Investments LP new | 131,344 | $13M | 0.2% | 2026-Q2 |
| EMERALD MUTUAL FUND ADVISERS TRUST new | 131,018 | $13M | 0.2% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 128,743 | $13M | 0.2% | 2026-Q2 |
| PFM Health Sciences, LP trimmed | 121,222 | $12M | 0.2% | 2026-Q2 |
| Tri Locum Partners LP trimmed | 120,712 | $12M | 0.2% | 2026-Q2 |
| Nuveen, LLC trimmed | 119,460 | $12M | 0.2% | 2026-Q2 |
| ORBIMED ADVISORS LLC new | 115,000 | $11M | 0.2% | 2026-Q2 |
| Patient Square Capital LP added | 108,000 | $11M | 0.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 107,455 | $10M | 0.2% | 2026-Q2 |
| MORGAN STANLEY added | 106,376 | $10M | 0.2% | 2026-Q2 |
| SEVEN GRAND MANAGERS, LLC | 100,000 | $10M | 0.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP new | 94,152 | $9M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO added | 92,280 | $9M | 0.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 91,838 | $9M | 0.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 88,315 | $9M | 0.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 87,860 | $9M | 0.1% | 2026-Q2 |
| Rhenman & Partners Asset Management AB added | 86,127 | $8M | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 85,603 | $8M | 0.1% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 75,396 | $7M | 0.1% | 2026-Q2 |
| Moody Aldrich Partners LLC trimmed | 74,552 | $7M | 0.1% | 2026-Q2 |
| Swiss National Bank added | 73,800 | $7M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 69,756 | $7M | 0.1% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV new | 65,683 | $6M | 0.1% | 2026-Q2 |
| LPL Financial LLC added | 65,295 | $6M | 0.1% | 2026-Q2 |
| Seven Fleet Capital Management LP added | 64,723 | $6M | 0.1% | 2026-Q2 |
| SummitTX Capital, L.P. trimmed | 63,866 | $6M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 62,829 | $6M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 60,048 | $6M | 0.1% | 2026-Q2 |
| Sio Capital Management, LLC trimmed | 59,254 | $6M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 58,521 | $6M | 0.1% | 2026-Q2 |
| Jones Hill Capital LP new | 57,100 | $6M | 0.1% | 2026-Q2 |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC added | 57,042 | $6M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 56,844 | $6M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.