undamentalytics Newsletter

Dianthus Therapeutics, Inc.: which funds bought and sold

Institutions that bought and sold Dianthus Therapeutics shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 174 institutions that filed 13F reports for both quarters added to or opened positions in Dianthus Therapeutics, and 100 cut or closed them. Together they added a net 1.6M shares, +2.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 112K shares (−0.3%); index fund managers were net buyers of 2.8M shares (+32.2%). 58 opened a new position and 32 sold out entirely.

Bought, Q2 2026 174 institutions, 58 of them new holders Sold, Q2 2026 100 institutions, 32 of them sold out
Net change, all compared +1.6M shares (+2.5%)
Net change, active managers −112K shares (−0.3%), 29 bought, 33 sold

Buyers versus sellers

institutions compared, 294
Active managers and hedge funds 29 bought · 33 sold · −112K
Index fund managers 11 bought · 0 sold · +2.8M
Other institutions 134 bought · 67 sold · −1.1M

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
T. Rowe Price Investment Management, Inc. Active manager +2.6M +200.9% 3.9M $379M
Price T Rowe Associates Inc Active manager +1.4M +119.3% 2.5M $245M
State Street Corp Index funds +959K +68.5% 2.4M $230M
Blackrock, Inc. Index funds +948K +29.9% 4.1M $402M
Wellington Management Group LLP Active manager +634K +24.4% 3.2M $315M
Assenagon Asset Management S.A. +561K New position 561K $54.7M
Jennison Associates LLC Active manager +537K +110.6% 1.0M $99.6M
FMR LLC Active manager +432K +5.6% 8.2M $799M
Logos Global Management LP Hedge fund +400K +100.0% 800K $78M
UBS Group AG +359K +45.9% 1.1M $111M
Geode Capital Management, LLC Index funds +342K +37.4% 1.3M $123M
Westfield Capital Management Co LP Active manager +315K New position 315K $30.7M
Emerald Advisers, LLC +248K New position 248K $24.2M
Pictet Asset Management Holding SA +242K +4922.2% 247K $24.1M
Vanguard Portfolio Management LLC Index funds +221K +63.2% 570K $55.6M
Qube Research & Technologies Ltd Hedge fund +167K +548.8% 197K $19.2M
Timessquare Capital Management, LLC +166K New position 166K $16.2M
Fred Alger Management, LLC Active manager +141K +12.1% 1.3M $127M
Nicholas Investment Partners, LP +136K +264.4% 187K $18.2M
Eagle Health Investments LP +131K New position 131K $12.8M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
RA Capital Management, L.P. Hedge fund −2.6M Sold out 0 —
Avidity Partners Management LP −2.1M −50.0% 2.1M $205M
Farallon Capital Management, L.L.C. Hedge fund −836K Sold out 0 —
Point72 Asset Management, L.P. Hedge fund −644K Sold out 0 —
Citadel Advisors LLC Hedge fund −636K −39.5% 975K $95M
Catalio Capital Management, LP −527K −94.1% 33K $3.2M
Balyasny Asset Management L.P. Hedge fund −312K −65.8% 162K $15.8M
Sio Capital Management, LLC −311K −84.0% 59K $5.8M
Braidwell LP Hedge fund −305K −33.9% 595K $58M
Silverarc Capital Management, LLC −265K −40.4% 390K $38M
Freestone Grove Partners LP Hedge fund −240K Sold out 0 —
Samlyn Capital, LLC Hedge fund −235K −54.5% 196K $19.1M
BNP Paribas Financial Markets −227K −96.5% 8,361 $815,030
Marshall Wace, LLP Hedge fund −213K −62.3% 129K $12.5M
Cormorant Asset Management, LP Hedge fund −200K −21.1% 750K $73.1M
Jefferies Financial Group Inc. −197K −97.1% 5,886 $573,767
Millennium Management LLC Hedge fund −170K −64.9% 92K $9M
Goldman Sachs Group Inc −166K −30.3% 382K $37.3M
Integral Health Asset Management, LLC −150K Sold out 0 —
Walleye Capital LLC Hedge fund −136K −88.4% 18K $1.7M

New positions

largest by value
InstitutionSharesValue June 30, 2026
Assenagon Asset Management S.A. 561K $54.7M
Westfield Capital Management Co LPActive manager 315K $30.7M
Emerald Advisers, LLC 248K $24.2M
Timessquare Capital Management, LLC 166K $16.2M
Eagle Health Investments LP 131K $12.8M
Emerald Mutual Fund Advisers Trust 131K $12.8M
Orbimed Advisors LLC 115K $11.2M
Two Sigma Investments, LPHedge fund 107K $10.5M
First Trust Advisors LP 94K $9.2M
Mercer Global Advisors Inc 66K $6.4M

Sold out

largest by value
InstitutionSharesValue March 31, 2026
RA Capital Management, L.P.Hedge fund 2.6M $219M
Farallon Capital Management, L.L.C.Hedge fund 836K $70.2M
Point72 Asset Management, L.P.Hedge fund 644K $54M
Freestone Grove Partners LPHedge fund 240K $20.1M
Integral Health Asset Management, LLC 150K $12.6M
Exoduspoint Capital Management, LPHedge fund 86K $7.2M
Nantahala Capital Management, LLCHedge fund 67K $5.6M
ADAR1 Capital Management, LLCHedge fund 55K $4.6M
Evergreen Quality Fund Gp, Ltd. 50K $4.2M
Squarepoint Ops LLCHedge fund 39K $3.3M

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
266
Ten largest holders
49.9%
of 13F-reported shares
Index fund managers
17.6%
of 13F-reported shares
Active managers and hedge funds
48.9%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 29 33 7 9 −112K −0.3%
Index fund managers 11 0 0 0 +2.8M +32.2%
Other institutions 134 67 51 23 −1.1M −4.7%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

← Back to Dianthus Therapeutics, Inc. · Insiders · Politicians