Ultragenyx Pharmaceutical Inc. 13F holders
311 funds reported a position in Ultragenyx Pharmaceutical Inc. in their 13F for the quarter ended 30 June 2026, together 106.9 million shares worth $3.56 billion. Against the quarter before, 54 opened a position, 115 added, 98 trimmed and 43 sold out; together they bought a net 10.7 million shares. The largest holders: BlackRock, Inc., RTW Investments, LP and Vanguard Portfolio Management LLC.
Funds holding311+13 on Q1 2026
Shares they held106.9Mworth $3.56 billion
Net bought on the quarter10.7M sharesabout $356.5 million at the funds' values
Funds buying to selling169 to 141opened or added, to cut or sold
Opened 54Added 115Held 41Trimmed 98Sold out 43
What each fund did in RARE against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in RARE in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
2,671 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 26 reported a position in Ultragenyx Pharmaceutical Inc.: 2 opened one, 12 added, 8 trimmed and 12 sold out, a net 10,885 shares bought.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 7 reported a position in Ultragenyx Pharmaceutical Inc. in a 13F for the quarter ended 30 June 2026. The largest: Two Sigma Investments, 3.6 million shares worth $120.9 million, 0.1% of its reported book. Sold out: Point72 Asset Management. In the quarter, 3 funds added or opened a position and 4 trimmed or sold out; together they sold a net 1.5 million shares, about $50.9 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Two Sigma Investments | 3,621,200 | $120.9 million | 0.1% | +1,415,380 | added | 30 June 2026 | 13F |
| Geode Capital Management | 2,578,828 | $86.1 million | 0.0% | +729,437 | added | 30 June 2026 | 13F |
| Millennium Management | 760,825 | $25.4 million | 0.0% | -1,011,359 | trimmed | 30 June 2026 | 13F |
| FMR LLC | 576,849 | $19.3 million | 0.0% | +289,533 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 413,700 | $13.8 million | 0.0% | -148,000 | trimmed | 30 June 2026 | 13F |
| Citadel Advisors | 210,531 | $7.0 million | 0.0% | -1,904,960 | trimmed | 30 June 2026 | 13F |
| Norges Bank | 78,490 | $2.6 million | 0.0% | held | 30 June 2026 | 13F | |
| Point72 Asset Management | 0 | $0 | 0.0% | -893,295 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
Read more
Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 10,654,276 | 9.97% | $355.7 million | 0.01% | +3,354,678 | 13F |
| RTW Investments, LP | 7,796,895 | 7.29% | $260.3 million | 2.22% | +4,148,100 | 13F |
| Vanguard Portfolio Management LLC | 6,790,135 | 6.35% | $226.7 million | 0.01% | +1,404,143 | 13F |
| AQR Capital Management LLC | 6,560,809 | 6.14% | $214.1 million | 0.07% | +1,982,785 | 13F |
| State Street Corp. | 6,158,766 | 5.76% | $205.6 million | 0.01% | +1,137,325 | 13F |
| Vanguard Capital Management LLC | 4,296,491 | 4.02% | $143.5 million | 0.00% | +106,660 | 13F |
| Two Sigma Investments, LP | 3,621,200 | 3.39% | $120.9 million | 0.09% | +1,415,380 | 13F |
| Sands Capital Management, LLC | 3,158,368 | 2.95% | $105.5 million | 0.39% | -56,165 | 13F |
| Jacobs Levy Equity Management, Inc. | 2,939,719 | 2.75% | $98.2 million | 0.35% | +1,508,648 | 13F |
| Frontier Capital Management Co. LLC | 2,847,936 | 2.66% | $95.1 million | 0.89% | +656,754 | 13F |
| Geode Capital Management, LLC | 2,578,828 | 2.41% | $86.1 million | 0.01% | +729,437 | 13F |
| Bellevue Group AG | 1,982,775 | 1.85% | $66.2 million | 1.39% | -397,225 | 13F |
| D. E. Shaw & Co., Inc. | 1,730,193 | 1.62% | $57.8 million | 0.04% | +469,175 | 13F |
| Sofinnova Investments, Inc. | 1,717,505 | 1.61% | $57.3 million | 3.06% | -1,428,383 | 13F |
| Adage Capital Partners GP, L.l.c. | 1,580,000 | 1.48% | $52.8 million | 0.07% | +1,100,000 | 13F |
| GW&K Investment Management, LLC | 1,481,178 | 1.39% | $49.5 million | 0.39% | -134,248 | 13F |
| MPM Bioimpact LLC | 1,418,215 | 1.33% | $47.4 million | 2.89% | new | 13F |
| Price T Rowe Associates Inc. | 1,356,501 | 1.27% | $45.3 million | 0.01% | +552,392 | 13F |
| Morgan Stanley | 1,324,805 | 1.24% | $44.2 million | 0.00% | -175,723 | 13F |
| Wellington Management Group LLP | 1,250,464 | 1.17% | $41.8 million | 0.01% | -1,390,348 | 13F |
| Voloridge Investment Management, LLC | 1,241,556 | 1.16% | $41.5 million | 0.18% | -185,278 | 13F |
| Bank of America Corp. | 1,148,454 | 1.07% | $38.3 million | 0.00% | +101,908 | 13F |
| Candriam S.C.A. | 1,001,841 | 0.94% | $33.4 million | 0.15% | -94,341 | 13F |
| Rock Springs Capital Management LP | 967,855 | 0.91% | $32.3 million | 1.58% | -250,918 | 13F |
| Jefferies Financial Group Inc. | 929,626 | 0.87% | $31.0 million | 0.29% | +914,138 | 13F |
| Northern Trust Corp. | 920,314 | 0.86% | $30.7 million | 0.00% | +384,748 | 13F |
| Eagle Health Investments LP | 884,121 | 0.83% | $29.5 million | 4.89% | no change | 13F |
| Qube Research & Technologies Ltd | 882,219 | 0.83% | $29.5 million | 0.03% | -32,541 | 13F |
| Russell Investments Group, Ltd. | 784,099 | 0.73% | $26.2 million | 0.02% | +381,140 | 13F |
| Millennium Management LLC | 760,825 | 0.71% | $25.4 million | 0.02% | -1,011,359 | 13F |
| Charles Schwab Investment Management Inc. | 760,039 | 0.71% | $25.4 million | 0.00% | +201,553 | 13F |
| Nuveen, LLC | 693,959 | 0.65% | $23.2 million | 0.01% | +31,905 | 13F |
| Pictet Asset Management Holding SA | 753,695 | 0.71% | $23.2 million | 0.02% | +150,124 | 13F |
| Vanguard Fiduciary Trust Co. | 671,411 | 0.63% | $22.4 million | 0.01% | +63,192 | 13F |
| UBS Group AG | 657,699 | 0.62% | $22.0 million | 0.00% | -175,041 | 13F |
| Palo Alto Investors LP | 596,495 | 0.56% | $19.9 million | 2.75% | no change | 13F |
| Sphera Funds Management Ltd | 588,494 | 0.55% | $19.6 million | 2.81% | -220,839 | 13F |
| Legal & General Group Plc | 586,520 | 0.55% | $19.6 million | 0.00% | -3,774 | 13F |
| Panagora Asset Management Inc. | 586,230 | 0.55% | $19.6 million | 0.06% | new | 13F |
| FMR LLC | 576,849 | 0.54% | $19.3 million | 0.00% | +289,533 | 13F |
| Goldman Sachs Group Inc. | 575,338 | 0.54% | $19.2 million | 0.00% | +222,241 | 13F |
| Trexquant Investment LP | 556,385 | 0.52% | $18.6 million | 0.12% | +166,918 | 13F |
| BNP Paribas Financial Markets | 498,167 | 0.47% | $16.6 million | 0.01% | +7,384 | 13F |
| Bank of New York Mellon Corp | 470,697 | 0.44% | $15.7 million | 0.00% | +129,572 | 13F |
| JPMorgan Chase & Co. | 493,126 | 0.46% | $15.3 million | 0.00% | +247,198 | 13F |
| Toronto Dominion Bank | 415,000 | 0.39% | $13.9 million | 0.02% | +414,838 | 13F |
| Renaissance Technologies LLC | 413,700 | 0.39% | $13.8 million | 0.02% | -148,000 | 13F |
| BNP Paribas Asset Management Holding S.A. | 409,255 | 0.38% | $13.7 million | 0.01% | -8,894 | 13F |
| Krensavage Asset Management, LLC | 390,879 | 0.37% | $13.1 million | 4.96% | no change | 13F |
| Algert Global LLC | 389,964 | 0.36% | $13.0 million | 0.15% | -38,565 | 13F |
The 50 largest of the 311 funds that reported a position in RARE in their 13F for the quarter ended 30 June 2026, by the value each reported.
Read more
Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on RARE
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Puts | 99,100 | $3.3 million | 30 June 2026 | 13F |
| Citadel Advisors | Calls | 38,000 | $1.3 million | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
Read more
They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 20 October 2026 | 13G | Madison Avenue International LP and 11 others | 6.3 million | 6.4% | 13 October 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 14 August 2026 | 13G | RTW Investments, LP and 3 others | 7.8 million | 7.9% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 13 August 2026 | 13G | AQR Capital Management, LLC and 3 others | 6.6 million | 6.7% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 7 August 2026 | 13G | State Street Corporation and 1 other | 6.2 million | 6.3% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 31 July 2026 | 13G/A | Vanguard Portfolio Management and 1 other | 6.9 million | 7.0% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 31 July 2026 | 13G | Vanguard Capital Management and 1 other | 5.1 million | 5.1% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 July 2026 | 13G/A | BlackRock, Inc. and 1 other | 8.1 million | 8.3% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 12 May 2026 | 13G | State Street Corporation and 1 other | 5.0 million | 5.1% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 29 April 2026 | 13G | Vanguard Portfolio Management and 1 other | 5.4 million | 5.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 5 February 2026 | 13G/A | FMR LLC and 3 others | 3.3 million | 3.5% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 5 November 2025 | 13G | FMR LLC and 3 others | 8.0 million | 8.3% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
Read more
Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 23 September 2026 | 1,600 | $15.62 | SEC |
| 17 September 2026 | 9,671 | $12.88 | SEC |
| 11 September 2026 | 108 | $14.40 | SEC |
| 3 September 2026 | 159,197 | $26.53 | SEC |
| 28 August 2026 | 111 | $26.26 | SEC |
| 26 August 2026 | 505 | $26.46 | SEC |
| 24 August 2026 | 1,756 | $25.83 | SEC |
| 20 August 2026 | 156 | $26.24 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.