ULTRAGENYX PHARMACEUTICAL IN (RARE): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in RARE · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
23
13F filers
Aggregate Value
$723.8M
Across holders
Last Price
$25.72
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity9 increased13 reduced4 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 6.56M | $214.1M | 29.6% | 0.1% | Added | +$213.9M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 3.62M | $120.9M | 16.7% | 0.1% | Added | +$47.3M | Q2 2026 |
| SANDS CAPITAL MANAGEMENT, LLC CIK 0001020066 | Institutional Manager | 3.16M | $105.5M | 14.6% | 0.4% | Reduced | $-1.9M | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 1.73M | $57.8M | 8.0% | 0.0% | Added | +$44.5M | Q2 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 1.58M | $52.8M | 7.3% | 0.1% | Added | +$36.7M | Q2 2026 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC CIK 0001556921 | Hedge Fund | 1.24M | $41.5M | 5.7% | 0.2% | Reduced | $-6.2M | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 882K | $29.5M | 4.1% | 0.0% | Reduced | $-1.1M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 761K | $25.4M | 3.5% | 0.0% | Reduced | $-33.8M | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 414K | $13.8M | 1.9% | 0.0% | Reduced | $-4.9M | Q2 2026 |
| Squarepoint Ops LLC CIK 0001642575 | Hedge Fund | 338K | $11.3M | 1.6% | 0.0% | Reduced | $-3.5M | Q2 2026 |
Added
Hedge Fund
$214.1M· 29.6% of total· 0.1% port· 6.56M sh· +$213.9M QoQ· Q2 2026
Added
Hedge Fund
$120.9M· 16.7% of total· 0.1% port· 3.62M sh· +$47.3M QoQ· Q2 2026
Reduced
Institutional Manager
$105.5M· 14.6% of total· 0.4% port· 3.16M sh· $-1.9M QoQ· Q2 2026
Added
Hedge Fund
$57.8M· 8.0% of total· 0.0% port· 1.73M sh· +$44.5M QoQ· Q2 2026
Added
Hedge Fund
$52.8M· 7.3% of total· 0.1% port· 1.58M sh· +$36.7M QoQ· Q2 2026
Reduced
Hedge Fund
$41.5M· 5.7% of total· 0.2% port· 1.24M sh· $-6.2M QoQ· Q2 2026
Reduced
Hedge Fund
$29.5M· 4.1% of total· 0.0% port· 882K sh· $-1.1M QoQ· Q2 2026
Reduced
Hedge Fund
$25.4M· 3.5% of total· 0.0% port· 761K sh· $-33.8M QoQ· Q2 2026
Reduced
Hedge Fund
$13.8M· 1.9% of total· 0.0% port· 414K sh· $-4.9M QoQ· Q2 2026
Reduced
Hedge Fund
$11.3M· 1.6% of total· 0.0% port· 338K sh· $-3.5M QoQ· Q2 2026
Added
Hedge Fund
$11.2M· 1.5% of total· 0.0% port· 335K sh· +$10.8M QoQ· Q2 2026
Reduced
Hedge Fund
$7.0M· 1.0% of total· 0.0% port· 211K sh· +$2.8M QoQ· Q2 2026
Reduced
Hedge Fund
$6.5M· 0.9% of total· 0.0% port· 195K sh· +$6.2M QoQ· Q2 2026
Unchanged
Hedge Fund
$5.7M· 0.8% of total· 0.0% port· 172K sh· +$0 QoQ· Q2 2026
Added
Hedge Fund
$5.3M· 0.7% of total· 0.0% port· 160K sh· $-5.2M QoQ· Q2 2026
Reduced
Hedge Fund
$4.8M· 0.7% of total· 0.0% port· 143K sh· $-5.2M QoQ· Q2 2026
Reduced
Hedge Fund
$4.3M· 0.6% of total· 0.1% port· 128K sh· $-972K QoQ· Q2 2026
Reduced
Hedge Fund
$3.4M· 0.5% of total· 0.0% port· 103K sh· +$1.2M QoQ· Q2 2026
Reduced
Hedge Fund
$1.8M· 0.2% of total· 0.0% port· 53K sh· $-14.8M QoQ· Q2 2026
Added
Hedge Fund
$694K· 0.1% of total· 0.0% port· 21K sh· +$341K QoQ· Q2 2026
Added
Hedge Fund
$549K· 0.1% of total· 0.0% port· 16K sh· +$22K QoQ· Q2 2026
Reduced
Hedge Fund
$62K· 0.0% of total· 0.0% port· 2K sh· $-296K QoQ· Q2 2026
Added
Hedge Fund
$3K· 0.0% of total· 0.0% port· 112 sh· — QoQ· Q2 2026
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