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Ultragenyx Pharmaceutical

295 hedge funds and large institutions have $2.05B invested in Ultragenyx Pharmaceutical in 2026 Q1 according to their latest regulatory filings, with 62 funds opening new positions, 125 increasing their positions, 83 reducing their positions, and 48 closing their positions.

New
Increased
Maintained
Reduced
Closed

200% more funds holding in top 10

Funds holding in top 10: 26 (+4)

51% more repeat investments, than reductions

Existing positions increased: 125 | Existing positions reduced: 83

29% more first-time investments, than exits

New positions opened: 62 | Existing positions closed: 48

4.16% more ownership

Funds ownership: 97.37%101.53% (+4.2%)

3% more funds holding

Funds holding: 287295 (+8)

8% more call options, than puts

Call options by funds: $27.9M | Put options by funds: $25.8M

5% less capital invested

Capital invested by funds: $2.16B → $2.05B (-$108M)

Holders
295
Holders Change
+8
Holders Change %
+2.79%
% of All Funds
3.63%
Holding in Top 10
6
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+200%
% of All Funds
0.07%
New
62
Increased
125
Reduced
83
Closed
48
Calls
$27.9M
Puts
$25.8M
Net Calls
+$2.02M
Net Calls Change
-$26.3M
Name Holding Trade Value Shares
Change
Change in
Stake
BlackRock
1
BlackRock
New York
$153M +$15M +668,044 +10%
VPM
2
Vanguard Portfolio Management
Pennsylvania
$113M +$121M +5,385,992 New
State Street
3
State Street
Massachusetts
$105M +$16.2M +718,395 +17%
AQR Capital Management
4
AQR Capital Management
Connecticut
$95.9M +$72.5M +3,217,527 +236%
VCM
5
Vanguard Capital Management
Pennsylvania
$87.8M +$94.3M +4,189,831 New
RI
6
RTW Investments
New York
$76.4M +$14.6M +648,656 +22%
Sands Capital Management
7
Sands Capital Management
Virginia
$67.3M -$6.11M -271,191 -8%
SI
8
Sofinnova Investments
California
$65.9M +$69M +3,062,588 +3,677%
Wellington Management Group
9
Wellington Management Group
Massachusetts
$55.3M +$4.03M +178,902 +7%
BG
10
Bellevue Group
Switzerland
$49.9M +$53.5M +2,377,420 +92,148%
Assenagon Asset Management
11
Assenagon Asset Management
Luxembourg
$47.3M +$46.3M +2,057,951 +1,030%
Two Sigma Investments
12
Two Sigma Investments
New York
$46.2M +$40.1M +1,781,771 +420%
FCM
13
Frontier Capital Management
Massachusetts
$45.9M +$5.09M +226,098 +12%
Citadel Advisors
14
Citadel Advisors
Florida
$44.3M -$4.74M -210,634 -9%
Geode Capital Management
15
Geode Capital Management
Massachusetts
$38.8M +$252K +11,183 +0.6%
Millennium Management
16
Millennium Management
New York
$37.1M +$20.1M +891,540 +101%
GKIM
17
GW&K Investment Management
Massachusetts
$33.8M +$5.4M +240,019 +17%
Morgan Stanley
18
Morgan Stanley
New York
$31.4M -$7.34M -325,767 -18%
Jacobs Levy Equity Management
19
Jacobs Levy Equity Management
New Jersey
$30M -$7.17M -318,197 -18%
Voloridge Investment Management
20
Voloridge Investment Management
Florida
$29.9M +$17.6M +783,478 +122%
D.E. Shaw & Co
21
D.E. Shaw & Co
New York
$26.4M +$20.6M +916,255 +266%
RSCM
22
Rock Springs Capital Management
Maryland
$25.5M -$1.09M -48,468 -4%
JHC
23
Jones Hill Capital
New York
$24.4M +$26.2M +1,165,557 New
CS
24
Candriam SCA
Luxembourg
$23M +$6.68M +296,798 +37%
Bank of America
25
Bank of America
North Carolina
$21.9M -$3.77M -167,382 -14%