undamentalytics Newsletter

Solid Biosciences Inc.: which funds bought and sold

Institutions that bought and sold Solid Biosciences 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, 97 institutions that filed 13F reports for both quarters added to or opened positions in Solid Biosciences, and 62 cut or closed them. Together they added a net 14.7M shares, +15.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 6.8M shares (+13.1%); index fund managers were net buyers of 7.9M shares (+69.6%). 40 opened a new position and 24 sold out entirely.

Bought, Q2 2026 97 institutions, 40 of them new holders Sold, Q2 2026 62 institutions, 24 of them sold out
Net change, all compared +14.7M shares (+15.3%)
Net change, active managers +6.8M shares (+13.1%), 20 bought, 21 sold

Buyers versus sellers

institutions compared, 179
Active managers and hedge funds 20 bought · 21 sold · +6.8M
Index fund managers 11 bought · 1 sold · +7.9M
Other institutions 66 bought · 40 sold · −125K

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
RTW Investments, LP Hedge fund +3.9M New position 3.9M $38.9M
FMR LLC Active manager +3.3M +90.7% 6.9M $68.7M
State Street Corp Index funds +3.0M +271.0% 4.2M $41.7M
RA Capital Management, L.P. Hedge fund +2.7M +28.9% 12.0M $120M
Blackrock, Inc. Index funds +2.0M +39.8% 6.9M $69.3M
Vanguard Capital Management LLC Index funds +1.3M +49.9% 4.0M $40.1M
Franklin Resources Inc Active manager +1.2M +56.9% 3.4M $34.4M
Armistice Capital, LLC Hedge fund +1.1M +33.7% 4.3M $42.7M
Silverarc Capital Management, LLC +668K New position 668K $6.7M
Goldman Sachs Group Inc +667K +71.3% 1.6M $16M
Geode Capital Management, LLC Index funds +645K +49.8% 1.9M $19.4M
Vanguard Portfolio Management LLC Index funds +410K +121.1% 749K $7.5M
Dimensional Fund Advisors LP +310K +32.4% 1.3M $12.6M
Moore Capital Management, LP Hedge fund +279K +85.8% 603K $6M
Citadel Advisors LLC Hedge fund +218K +8.4% 2.8M $28.1M
Northern Trust Corp Index funds +185K +44.3% 604K $6M
Woodline Partners LP Hedge fund +179K +36.2% 674K $6.7M
Vanguard Fiduciary Trust Co Index funds +169K +51.8% 495K $4.9M
Soleus Capital Management, L.P. Hedge fund +150K New position 150K $1.5M
Bank Of America Corp +137K +35.5% 524K $5.2M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
Vestal Point Capital, LP Hedge fund −2.8M −56.8% 2.2M $21.6M
Point72 Asset Management, L.P. Hedge fund −1.6M −78.2% 448K $4.5M
Nantahala Capital Management, LLC Hedge fund −1.2M Sold out 0 —
Monashee Investment Management LLC −920K −64.8% 500K $5M
Ally Bridge Group (NY) LLC −511K −66.6% 256K $2.6M
Millennium Management LLC Hedge fund −364K Sold out 0 —
Parkman Healthcare Partners LLC −309K Sold out 0 —
Adage Capital Partners Gp, L.L.C. Hedge fund −250K −14.2% 1.5M $15M
Ikarian Capital, LLC −221K −83.8% 43K $429,130
Ameriprise Financial Inc −213K −8.7% 2.2M $22.2M
Invesco Ltd. −198K −57.9% 143K $1.4M
Nuveen, LLC −159K −39.6% 242K $2.4M
BNP Paribas Financial Markets −109K −50.2% 108K $1.1M
Susquehanna International Group, LLP −107K −39.6% 163K $1.6M
Panagora Asset Management Inc Active manager −91K Sold out 0 —
Susquehanna Portfolio Strategies, LLC −90K −45.7% 107K $1.1M
HRT Financial LP −87K Sold out 0 —
Boothbay Fund Management, LLC Hedge fund −67K −77.1% 20K $199,291
Redmile Group, LLC −63K −3.1% 1.9M $19.5M
Virtu Financial LLC −60K Sold out 0 —

New positions

largest by value
InstitutionSharesValue June 30, 2026
RTW Investments, LPHedge fund 3.9M $38.9M
Silverarc Capital Management, LLC 668K $6.7M
Soleus Capital Management, L.P.Hedge fund 150K $1.5M
Qube Research & Technologies LtdHedge fund 137K $1.4M
Y-Intercept (Hong Kong) Ltd 110K $1.1M
Alps Advisors Inc 100K $998,161
Jump Financial, LLC 88K $880,628
Verition Fund Management LLCHedge fund 81K $811,937
Quadrature Capital LtdHedge fund 78K $782,117
Rafferty Asset Management, LLCIndex funds 72K $717,072

Sold out

largest by value
InstitutionSharesValue March 31, 2026
Nantahala Capital Management, LLCHedge fund 1.2M $8.4M
Millennium Management LLCHedge fund 364K $2.6M
Parkman Healthcare Partners LLC 309K $2.2M
Panagora Asset Management IncActive manager 91K $655,884
HRT Financial LP 87K $625,000
Virtu Financial LLC 60K $430,000
Squarepoint Ops LLCHedge fund 45K $322,337
Schonfeld Strategic Advisors LLCHedge fund 30K $219,549
Gsa Capital Partners LLP 30K $213,000
Persistent Asset Partners Ltd 28K $201,528

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
156
Ten largest holders
62.6%
of 13F-reported shares
Index fund managers
16.9%
of 13F-reported shares
Active managers and hedge funds
51.5%
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 20 21 6 9 +6.8M +13.1%
Index fund managers 11 1 1 1 +7.9M +69.6%
Other institutions 66 40 33 14 −125K −0.4%

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 Solid Biosciences Inc. · Insiders · Politicians