Security record · archived quarter
RARE
Ultragenyx Pharmaceutical Inc. · Healthcare · Biotechnology
106Tracked holders
+4Δ holders
55.54MShares held
$1.16BReported value
+10New positions
−7Exits
Momentum inputs (comparable managers):
holder breadth +3.9% ·
share flow +0.4% ·
net new positions +2.8%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | 0 | 477.97K | $7.18M | +1 | −2 |
| Q2 2026 | 97 | -6 | 59.88M | $1.99B | +8 | −14 |
| Q1 2026 | 106 | +4 | 55.54M | $1.16B | +10 | −7 |
| Q4 2025 | 102 | 0 | 62.50M | $1.44B | +1 | n/a |
| Q3 2025 | 19 | -1 | 45.29M | $1.36B | n/a | −2 |
| Q2 2025 | 18 | -1 | 33.50M | $1.22B | n/a | −1 |
| Q1 2025 | 16 | 0 | 17.22M | $623.52M | n/a | n/a |
| Q4 2024 | 16 | +1 | 16.41M | $690.18M | +1 | n/a |
| Q3 2024 | 14 | +2 | 15.84M | $879.45M | +2 | n/a |
| Q2 2024 | 12 | n/a | 15.75M | $647.24M | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 7.30M | +10.1% | $152.93M | 0.0% | ▲ Add | 4 | SEC ↗ ×17 |
| 2 | State Street Global Advisors ✦ (passive) | 5.02M | +16.7% | $105.20M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 3 | AQR Capital Management ✦ | 4.58M | +236.5% | $95.91M | 0.0% | ▲ Add | 8 | SEC ↗ ×6 |
| 4 | Vanguard Capital Management Llc | 4.19M | n/a | $87.78M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Wellington Management ✦ | 2.64M | +7.3% | $55.33M | 0.0% | ▲ Add | 8 | SEC ↗ ×5 |
| 6 | Assenagon Asset Management S.A. | 2.26M | +1030.4% | $47.30M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 2.21M | +420.2% | $46.21M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 8 | Citadel Advisors ✦ | 2.12M | -9.1% | $44.32M | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 9 | Geode Capital Management ✦ (passive) | 1.85M | +0.6% | $38.75M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 10 | Millennium Management ✦ | 1.77M | +101.2% | $37.13M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 11 | Morgan Stanley ✦ | 1.50M | -17.8% | $31.44M | 0.0% | ▼ Trim | 3 | SEC ↗ ×9 |
| 12 | D. E. Shaw & Co. ✦ | 1.26M | +265.8% | $26.42M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 13 | Bank Of America Corp /De/ | 1.05M | -13.8% | $21.93M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 14 | Qube Research & Technologies Ltd | 914.76K | New | $19.16M | 0.0% | New | 1 | SEC ↗ |
| 15 | Point72 Asset Management ✦ | 893.29K | New | $18.71M | 0.0% | New | 1 | SEC ↗ |
| 16 | UBS Group AG | 832.74K | +24.5% | $17.45M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 17 | T. Rowe Price ✦ | 804.11K | -48.3% | $16.85M | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 18 | Nuveen, LLC | 662.05K | -17.4% | $13.87M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 19 | Hrt Financial Lp | 613.23K | +22.2% | $12.85M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 20 | Legal & General Group Plc | 590.29K | +43.5% | $12.36M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 21 | Renaissance Technologies ✦ | 561.70K | +53.4% | $11.77M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 22 | Charles Schwab Investment… | 558.49K | -6.8% | $11.70M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 23 | Pictet Asset Management Holding SA | 603.57K | -51.0% | $11.67M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 24 | Northern Trust Corp | 535.57K | +1.7% | $11.22M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 25 | Susquehanna International Group, Llp | 524.80K | +244.6% | $10.99M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 26 | Connor, Clark & Lunn Investment… | 500.92K | +89.8% | $10.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Bnp Paribas Financial Markets | 490.78K | -45.6% | $10.28M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | Adage Capital Partners ✦ | 480.00K | +71.4% | $10.06M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 29 | Manufacturers Life Insurance… | 451.12K | +36.2% | $9.45M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 30 | Squarepoint Ops LLC | 444.54K | +13.8% | $9.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 31 | BNP Paribas Asset Management… | 418.15K | -78.0% | $8.76M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 32 | Russell Investments Group, Ltd. | 402.96K | -52.1% | $8.44M | 0.0% | ▼ Trim | 2 | SEC ↗ ×14 |
| 33 | Balyasny Asset Management L.P. | 384.36K | -26.1% | $8.05M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | Goldman Sachs Group ✦ | 353.10K | -11.8% | $7.40M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 35 | Bank of New York Mellon Corp | 341.12K | +14.2% | $7.15M | 0.0% | ▲ Add | 2 | SEC ↗ ×11 |
| 36 | Citigroup Inc | 315.44K | +353.8% | $6.61M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 37 | Franklin Resources Inc | 312.63K | +1.1% | $6.55M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 38 | Invesco Ltd. | 289.57K | +25.8% | $6.07M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 39 | Fidelity (FMR) ✦ | 287.32K | -89.2% | $6.02M | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 40 | Massachusetts Financial Services Co… | 260.38K | -16.0% | $5.46M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 41 | Barclays Plc | 249.81K | -30.4% | $5.23M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 42 | JPMorgan Chase ✦ | 245.93K | -93.8% | $4.75M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 43 | UBS AM, a distinct business unit of… | 223.05K | +9.3% | $4.67M | 0.0% | ▲ Add | 2 | SEC ↗ ×9 |
| 44 | Man Group plc | 213.35K | +172.2% | $4.47M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 45 | Quantinno Capital Management LP | 187.51K | +276.9% | $3.93M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Nomura Asset Management… | 181.77K | -0.6% | $3.81M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 47 | Jane Street Group, Llc | 173.74K | -83.0% | $3.64M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 48 | Swiss National Bank | 171.05K | 0.0% | $3.58M | 0.0% | Held | 2 | SEC ↗ |
| 49 | Schroder Investment Management Group | 179.10K | n/a | $3.46M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 50 | Marshall Wace ✦ | 157.53K | +118.3% | $3.30M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 51 | Group One Trading Llc | 140.17K | +504.0% | $2.94M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 52 | Corient Private Wealth LP | 136.54K | New | $2.86M | 0.0% | New | 1 | SEC ↗ |
| 53 | Fifth Third Bancorp | 110.27K | New | $2.31M | 0.0% | New | 1 | SEC ↗ |
| 54 | California State Teachers… | 104.65K | +25.6% | $2.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | Rhumbline Advisers | 103.41K | +1.6% | $2.17M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 56 | State Board Of Administration Of… | 93.83K | -3.1% | $1.97M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 57 | Sei Investments Co | 92.09K | -40.1% | $1.93M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 58 | Deutsche Bank Ag\ | 71.87K | -88.0% | $1.51M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 59 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 71.51K | +8.1% | $1.48M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 60 | Wells Fargo & Company/Mn | 68.77K | +8.2% | $1.44M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 61 | Mariner, LLC | 61.31K | +498.5% | $1.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 62 | Nordea Investment Management Ab | 57.94K | -1.5% | $1.20M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 63 | Tudor Investment Corp Et Al | 53.52K | +298.9% | $1.12M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Hsbc Holdings Plc | 51.64K | -13.0% | $1.08M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | State Of Wisconsin Investment Board | 47.06K | -19.8% | $985,865 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | Cwm, Llc | 44.57K | +239.6% | $933,762 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Ameriprise Financial Inc | 42.30K | -84.7% | $886,082 | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 68 | Zurcher Kantonalbank (Zurich… | 39.89K | +41.3% | $835,779 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Aberdeen Group plc | 38.50K | -97.4% | $806,554 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 70 | Wealth Enhancement Advisory… | 34.17K | +191.9% | $767,206 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Janus Henderson Group Plc | 36.54K | 0.0% | $764,662 | 0.0% | Held | 2 | SEC ↗ |
| 72 | Mercer Global Advisors Inc /Adv | 33.78K | +141.9% | $707,796 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | New York State Common Retirement… | 33.70K | -0.9% | $706,015 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Creative Planning | 32.44K | +187.9% | $679,513 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 75 | Cerity Partners LLC | 31.89K | +103.4% | $668,138 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 76 | Alliancebernstein L.P. | 28.02K | +2.7% | $644,575 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Nomura Holdings Inc | 30.00K | New | $628,500 | 0.0% | New | 1 | SEC ↗ |
| 78 | Raymond James Financial Inc | 24.79K | +24.9% | $519,372 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 79 | Stifel Financial Corp | 23.77K | +25.1% | $498,090 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 80 | American Century Companies Inc | 21.78K | New | $456,291 | 0.0% | New | 1 | SEC ↗ |
| 81 | Captrust Financial Advisors | 20.39K | +79.2% | $427,199 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | Envestnet Asset Management Inc | 19.58K | -2.6% | $410,222 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 83 | Victory Capital Management Inc | 17.90K | -10.1% | $375,026 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 84 | Capstone Investment Advisors, Llc | 15.80K | New | $330,947 | 0.0% | New | 1 | SEC ↗ |
| 85 | Jones Financial Companies Lllp | 16.89K | +4808.4% | $327,231 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 86 | Universal- Beteiligungs- und… | 15.48K | +9.8% | $324,265 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 87 | Amundi | 15.17K | New | $317,728 | 0.0% | New | 1 | SEC ↗ |
| 88 | First Trust Advisors Lp | 14.20K | -14.7% | $297,448 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | IMC-Chicago, LLC | 11.92K | -49.1% | $249,703 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 90 | Tidal Investments LLC | 11.56K | New | $242,245 | 0.0% | New | 1 | SEC ↗ |
| 91 | Pnc Financial Services Group, Inc. | 11.05K | +66.2% | $231,498 | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 92 | Rockefeller Capital Management L.P. | 10.11K | +31.0% | $211,721 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 93 | Daiwa Securities Group Inc. | 7.66K | +5.2% | $160,477 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 94 | Mitsubishi UFJ Asset Management… | 7.61K | -2.3% | $159,513 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 95 | Walleye Trading LLC | 7.04K | -46.5% | $147,467 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 96 | Ensign Peak Advisors, Inc | 6.72K | -97.3% | $140,805 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 97 | Mirae Asset Global Investments Co.… | 5.04K | +7.5% | $105,588 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 98 | Simplex Trading, Llc | 4.73K | New | $99,072 | 0.0% | New | 1 | SEC ↗ |
| 99 | LMR Partners LLP | 3.45K | -84.1% | $72,298 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | Royal Bank Of Canada | 3.29K | -98.0% | $69,000 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Qube Research & Technologies… | $19.16M | 0.0% |
| Point72 Asset Management | $18.71M | 0.0% |
| Corient Private Wealth LP | $2.86M | 0.0% |
| Fifth Third Bancorp | $2.31M | 0.0% |
| Nomura Holdings Inc | $628,500 | 0.0% |
| American Century Companies Inc | $456,291 | 0.0% |
| Capstone Investment Advisors… | $330,947 | 0.0% |
| Amundi | $317,728 | 0.0% |
| Tidal Investments LLC | $242,245 | 0.0% |
| Simplex Trading, Llc | $99,072 | 0.0% |
Exited
| Norges Bank | $29.00M | was 0.0% |
| Fisher Asset Management | $4.57M | was 0.0% |
| Wcm Investment Management, Llc | $3.72M | was 0.0% |
| Td Asset Management Inc | $1.89M | was 0.0% |
| DZ BANK AG Deutsche Zentral… | $1.55M | was 0.0% |
| Voya Investment Management Llc | $458,482 | was 0.0% |
| Nomura Asset Management Co Ltd | $0 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 293 holders, 97.86M shares, $1.96B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Oct 15
Horn Howard
Officer · 7.07K sh · $107,898
Sep 15
Huizenga Theodore Alan
Officer · 1.28K sh · $17,410
Sep 03
Huizenga Theodore Alan
Officer · 161 sh · $2,252
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Oct 20
SC 13G: Madison Avenue Partners, LP
Aug 14
SC 13G: RTW INVESTMENTS, LP
Aug 13
SC 13G: AQR CAPITAL MANAGEMENT LLC
Aug 07
SC 13G: STATE STREET CORP
Jul 31
SC 13G: VANGUARD CAPITAL MANAGEMENT LLC
Jul 31
SC 13G/A: VANGUARD PORTFOLIO MANAGEMENT LLC
Jul 30
SC 13G/A: BlackRock, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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