RARE Institutional Ownership & Shareholders
ULTRAGENYX PHARMACEUTICAL IN (RARE) is currently held by 298 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $3.45B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of RARE tracked by InsiderSet, reporting ownership valued at approximately $355.75M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $177.18M, representing an estimated loss of -50.19% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed RARE value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Rtw Investments, Lp, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in ULTRAGENYX PHARMACEUTICAL IN (RARE).
This page ranks the largest institutional RARE shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
298
Total Reported Value
$3.45B
Largest Holder
Blackrock, Inc.
Largest Position
$355.75M
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
58
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 10,654,276 | $355,746,262 | $177,180,610 | -$178,565,652 | -50.19% | |
| Rtw Investments, Lp | 2.22% | 7,796,895 | $260,338,324 | $129,662,364 | -$130,675,960 | -50.19% | |
| Vanguard Portfolio Management Llc | 0.01% | 6,790,135 | $226,722,608 | $112,919,945 | -$113,802,663 | -50.19% | |
| Aqr Capital Management Llc | 0.07% | 6,560,809 | $214,144,806 | $109,106,254 | -$105,038,552 | -49.05% | |
| State Street Corp | 0.01% | 6,158,766 | $205,641,197 | $102,420,279 | -$103,220,918 | -50.19% | |
| Vanguard Capital Management Llc | 0.00% | 4,296,491 | $143,459,834 | $71,450,645 | -$72,009,189 | -50.19% | |
| Two Sigma Investments, Lp | 0.09% | 3,621,200 | $120,911,868 | $60,220,556 | -$60,691,312 | -50.19% | |
| Sands Capital Management, Llc | 0.39% | 3,158,368 | $105,457,908 | $52,523,660 | -$52,934,248 | -50.19% | |
| Jacobs Levy Equity Management, Inc | 0.35% | 2,939,719 | $98,157,217 | $48,887,527 | -$49,269,690 | -50.19% | |
| Frontier Capital Management Co Llc | 0.89% | 2,847,936 | $95,092,590 | $47,361,176 | -$47,731,414 | -50.19% | |
| Geode Capital Management, Llc | 0.00% | 2,578,828 | $86,123,888 | $42,885,910 | -$43,237,978 | -50.20% | |
| Bellevue Group Ag | 1.39% | 1,982,775 | $66,204,857 | $32,973,548 | -$33,231,309 | -50.19% | |
| D. E. Shaw & Co., Inc. | 0.04% | 1,730,193 | $57,771,145 | $28,773,110 | -$28,998,035 | -50.19% | |
| Sofinnova Investments, Inc. | 3.06% | 1,717,505 | $57,347,492 | $28,562,108 | -$28,785,384 | -50.19% | |
| Adage Capital Partners Gp, L.L.C. | 0.07% | 1,580,000 | $52,756,200 | $26,275,400 | -$26,480,800 | -50.19% | |
| Gw&K Investment Management, Llc | 0.39% | 1,481,178 | $49,457,000 | $24,631,990 | -$24,825,010 | -50.20% | |
| Mpm Bioimpact Llc | 2.89% | 1,418,215 | $47,354,199 | $23,584,915 | -$23,769,284 | -50.19% | |
| Price T Rowe Associates Inc | 0.00% | 1,356,501 | $45,295,000 | $22,558,612 | -$22,736,388 | -50.20% | |
| Morgan Stanley | 0.00% | 1,324,805 | $44,235,265 | $22,031,507 | -$22,203,758 | -50.19% | |
| Wellington Management Group Llp | 0.01% | 1,250,464 | $41,752,993 | $20,795,216 | -$20,957,777 | -50.19% | |
| Voloridge Investment Management, Llc | 0.18% | 1,241,556 | $41,455,555 | $20,647,076 | -$20,808,479 | -50.19% | |
| Bank Of America Corp | 0.00% | 1,148,454 | $38,346,863 | $19,098,790 | -$19,248,073 | -50.19% | |
| Rock Springs Capital Management Lp | 1.58% | 967,855 | $32,316,678 | $16,095,429 | -$16,221,249 | -50.19% | |
| Jefferies Financial Group Inc. | 0.29% | 929,626 | $31,040,212 | $15,459,680 | -$15,580,532 | -50.19% | |
| Northern Trust Corp | 0.00% | 920,314 | $30,729,285 | $15,304,822 | -$15,424,463 | -50.19% | |
| Eagle Health Investments Lp | 4.89% | 884,121 | $29,520,800 | $14,702,932 | -$14,817,868 | -50.19% | |
| Qube Research & Technologies Ltd | 0.03% | 882,219 | $29,457,292 | $14,671,302 | -$14,785,990 | -50.19% | |
| Russell Investments Group, Ltd. | 0.02% | 784,099 | $26,181,069 | $13,039,566 | -$13,141,503 | -50.19% | |
| Millennium Management Llc | 0.02% | 760,825 | $25,403,947 | $12,652,520 | -$12,751,427 | -50.19% | |
| Charles Schwab Investment Management Inc | 0.00% | 760,039 | $25,377,702 | $12,639,449 | -$12,738,253 | -50.19% | |
| Nuveen, Llc | 0.01% | 693,959 | $23,171,291 | $11,540,538 | -$11,630,753 | -50.19% | |
| Vanguard Fiduciary Trust Co | 0.00% | 671,411 | $22,418,413 | $11,165,565 | -$11,252,848 | -50.19% | |
| Ubs Group Ag | 0.00% | 657,699 | $21,960,569 | $10,937,534 | -$11,023,035 | -50.19% | |
| Palo Alto Investors Lp | 2.75% | 596,495 | $19,916,968 | $9,919,712 | -$9,997,256 | -50.19% | |
| Sphera Funds Management Ltd. | 2.81% | 588,494 | $19,649,815 | $9,786,655 | -$9,863,160 | -50.19% | |
| Legal & General Group Plc | 0.00% | 586,520 | $19,583,902 | $9,753,828 | -$9,830,074 | -50.19% | |
| Panagora Asset Management Inc | 0.06% | 586,230 | $19,574,220 | $9,749,005 | -$9,825,215 | -50.19% | |
| Fmr Llc | 0.00% | 576,849 | $19,260,990 | $9,592,999 | -$9,667,991 | -50.19% | |
| Goldman Sachs Group Inc | 0.00% | 575,338 | $19,210,535 | $9,567,871 | -$9,642,664 | -50.19% | |
| Trexquant Investment Lp | 0.11% | 556,385 | $18,577,695 | $9,252,683 | -$9,325,012 | -50.19% | |
| Bnp Paribas Financial Markets | 0.01% | 498,167 | $16,633,796 | $8,284,517 | -$8,349,279 | -50.19% | |
| Bank Of New York Mellon Corp | 0.00% | 470,697 | $15,716,566 | $7,827,691 | -$7,888,875 | -50.19% | |
| Jpmorgan Chase & Co | 0.00% | 493,126 | $15,268,024 | $8,200,685 | -$7,067,339 | -46.29% | |
| Toronto Dominion Bank | 0.02% | 415,000 | $13,856,850 | $6,901,450 | -$6,955,400 | -50.19% | |
| Renaissance Technologies LLC | Jim Simons | 0.02% | 413,700 | $13,813,443 | $6,879,831 | -$6,933,612 | -50.19% |
| Bnp Paribas Asset Management Holding S.A. | 0.01% | 409,255 | $13,665,024 | $6,805,911 | -$6,859,113 | -50.19% | |
| Krensavage Asset Management, Llc | 4.96% | 390,879 | $13,051,000 | $6,500,318 | -$6,550,682 | -50.19% | |
| Algert Global Llc | 0.15% | 389,964 | $13,020,898 | $6,485,101 | -$6,535,797 | -50.19% | |
| Manufacturers Life Insurance Company, The | 0.01% | 381,420 | $12,735,614 | $6,343,015 | -$6,392,599 | -50.19% | |
| Summittx Capital, L.P. | 0.33% | 374,270 | $12,496,875 | $6,224,110 | -$6,272,765 | -50.19% |
Frequently asked questions about RARE
Who are the largest institutional holders of RARE?
The largest institutional holders of RARE reported in the latest SEC Form 13F filings include Blackrock, Inc., Rtw Investments, Lp, Vanguard Portfolio Management Llc, Aqr Capital Management Llc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported RARE position.
What is RARE institutional ownership?
This page tracks RARE positions reported by institutional investment managers through SEC Form 13F. ULTRAGENYX PHARMACEUTICAL IN (RARE) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own RARE?
InsiderSet currently tracks 298 institutional managers reporting RARE holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of RARE shareholders.
How much RARE stock do institutions own?
Institutional investment managers disclosed approximately $3.45B in RARE holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was RARE institutional ownership last updated?
The latest RARE institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional RARE holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its RARE position after the reporting date.
Are institutions buying or selling RARE?
Institutional buying and selling can be analyzed by comparing RARE positions across consecutive 13F reporting periods. InsiderSet's RARE Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View RARE ownership changes.
How has RARE institutional ownership changed over time?
InsiderSet tracks RARE institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.