WhaleCreep

Which hedge funds own RARE? ULTRAGENYX PHARMACEUTICAL IN, Q2 2026 13F holders

HealthcareBiotechnology

59 tracked hedge funds disclosed a position in RARE (ULTRAGENYX PHARMACEUTICAL IN) in their Q2 2026 13F filings, worth $1.3bn in total. The largest holder by portfolio weight is Ishara Investments LP at 5.0% of its book. 10 opened a new position this quarter: MPM Bioimpact LLC, Stonepine Capital Management, LLC, Verdad Advisers, LP, Ghisallo Capital Management LLC. 14 exited: Jones Hill Capital LP, Newtyn Management, LLC, Birchview Capital, LP.

59
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
10
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
14
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$54.1m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$70.4m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$1.3bn
Combined value
Sum of the holders' reported positions in the security.
4.8%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

59 rows
Ishara Investments LP Hedge fund5.0%$6.8m205,000+18%added
Krensavage Asset Management, LLC Hedge fund5.0%$13.1m390,8790.0%held
Eagle Health Investments LP Hedge fund4.9%$29.5m884,1210.0%held
GordonMD Global Investments LP Hedge fund4.7%$9.7m289,1010.0%held
Sofinnova Investments, Inc. Hedge fund3.1%$57.3m1.72m−45%reduced
MPM Bioimpact LLC Hedge fund2.9%$47.4m1.42m–new
Sphera Funds Management Ltd. Hedge fund2.8%$19.6m588,494−27%reduced
Palo Alto Investors LP Hedge fund2.8%$19.9m596,4950.0%held
B Group, Inc. Hedge fund2.6%$4.5m135,0000.0%held
RTW Investments, LP Hedge fund2.2%$260m7.80m+114%added
Catalio Capital Management, LP Hedge fund2.0%$10.6m316,252−63%reduced
Rock Springs Capital Management LP Hedge fund1.6%$32.3m967,855−21%reduced
Ikarian Capital, LLC Hedge fund0.9%$5.5m165,617−66%reduced
Stonepine Capital Management, LLC Hedge fund0.6%$835k25,000–new
Atom Investors LP Hedge fund0.5%$5.7m171,771+83%added
Sands Capital Long-only investor0.4%$105m3.16m−1.7%reduced
SummitTX Capital, L.P. Hedge fund0.3%$12.5m374,270+7.6%added
DAFNA Capital Management LLC Hedge fund0.3%$1.6m47,100−23%reduced
Eversept Partners, LP Hedge fund0.3%$5.1m154,130+146%added
EntryPoint Capital, LLC Hedge fund0.2%$860k25,766−1.4%reduced
Verdad Advisers, LP Hedge fund0.2%$208k6,223–new
Voloridge Investment Management, LLC Hedge fund0.2%$41.5m1.24m−13%reduced
Caption Management, LLC Hedge fund0.2%$4.3m130,000+18%added
Candriam S.C.A. Hedge fund0.2%$33.4m1.00m−8.6%reduced
Quarry LP Hedge fund0.1%$835k25,000+18%added
Trexquant Investment LP Hedge fund0.1%$18.6m556,385+43%added
Ghisallo Capital Management LLC Hedge fund0.10%$5.0m150,000–new
Boothbay Fund Management, LLC Hedge fund0.10%$5.2m156,612+10%added
Moore Capital Management, LP Hedge fund0.10%$4.3m128,035−19%reduced
Arrowpoint Investment Partners (Singapore) Pte. Ltd. Hedge fund0.10%$328k9,829–new
Two Sigma Investments, LP Hedge fund0.09%$121m3.62m+64%added
AQR Capital Management LLC Hedge fund0.07%$214m6.56m+43%added
Adage Capital Partners GP, L.L.C. Hedge fund0.07%$52.8m1.58m+229%added
Entropy Technologies, LP Hedge fund0.06%$1.5m44,345−60%reduced
Walleye Capital LLC Hedge fund0.05%$11.2m334,854+180%added
Y-Intercept (Hong Kong) Ltd Hedge fund0.05%$2.6m78,354−64%reduced
Brevan Howard Capital Management LP Hedge fund0.05%$3.4m102,768−52%reduced
D. E. Shaw & Co., Inc. Hedge fund0.04%$57.8m1.73m+37%added
Qube Research & Technologies Ltd Hedge fund0.03%$29.5m882,219−3.6%reduced
PDT Partners, LLC Hedge fund0.03%$514k15,4050.0%held
Gsa Capital Partners LLP Hedge fund0.03%$406k12,162−55%reduced
Squarepoint Ops LLC Hedge fund0.02%$11.3m338,368−24%reduced
Lighthouse Investment Partners, LLC Hedge fund0.02%$694k20,785+97%added
Engineers Gate Manager LP Hedge fund0.02%$1.6m48,557−46%reduced
Aquatic Capital Management LLC Hedge fund0.02%$560k16,760−75%reduced
Renaissance Technologies LLC Hedge fund0.02%$13.8m413,700−26%reduced
Woodline Partners LP Hedge fund0.02%$5.7m171,8050.0%held
Millennium Management LLC Hedge fund0.02%$25.4m760,825−57%reduced
Jain Global LLC Hedge fund0.02%$1.4m40,686−22%reduced
Landscape Capital Management, L.L.C. Hedge fund0.01%$223k6,682–new