Company · Ownership research

Ultragenyx Pharmaceutical Inc. RARE

CIK 0001515673 · CUSIP 90400D108

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 90400D108 (RARE), not CUSIP 90400D908 (RARE), CUSIP 90400D958 (RARE), and does not merge CUSIPs.

This page lists the top 20 of 271 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$406.20M 8,700,007 shares	0.01%	+26.57K(+0.30%)Added	SEC filing ↗ May 10, 2024	▾
02	RTW INVESTMENTS, LP CIK 1493215 · View history	$330.90M 7,087,115 shares	4.88%	+200.03K(+2.90%)Added	SEC filing ↗ May 15, 2024	▾
03	BlackRock Inc. CIK 1364742 · View history	$244.46M 5,235,738 shares	0.01%	-2.66K(-0.10%)Reduced	SEC filing ↗ May 10, 2024	▾
04	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$191.33M 4,097,975 shares	0.03%	-317.05K(-7.20%)Reduced	SEC filing ↗ May 15, 2024	▾
05	SANDS CAPITAL MANAGEMENT, LLC CIK 1020066 · View history	$180.20M 3,859,447 shares	0.50%	-258.56K(-6.30%)Reduced	SEC filing ↗ May 14, 2024	▾
06	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$166.63M 3,568,873 shares	0.02%	+120.17K(+3.50%)Added	SEC filing ↗ May 15, 2024	▾
07	STATE STREET CORP CIK 93751 · View history	$133.12M 2,851,250 shares	0.01%	-401.25K(-12.30%)Reduced	SEC filing ↗ May 15, 2024	▾
08	Clearbridge Investments, LLC CIK 1348883 · View history	$112.10M 2,400,854 shares	0.09%	+17.36K(+0.70%)Added	SEC filing ↗ May 13, 2024	▾
09	ALKEON CAPITAL MANAGEMENT LLC CIK 1230239 · View history	$104.67M 2,241,832 shares	0.58%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
10	FEDERATED HERMES, INC. CIK 1056288 · View history	$90.52M 1,938,680 shares	0.21%	-507.82K(-20.80%)Reduced	SEC filing ↗ May 14, 2024	▾
11	Rock Springs Capital Management LP CIK 1595725 · View history	$82.87M 1,774,938 shares	2.11%	+20.90K(+1.20%)Added	SEC filing ↗ May 15, 2024	▾
12	SUVRETTA CAPITAL MANAGEMENT, LLC CIK 1569064 · View history	$78.29M 1,676,811 shares	3.30%	-449.50K(-21.10%)Reduced	SEC filing ↗ May 15, 2024	▾
13	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$69.22M 1,482,471 shares	0.02%	-96.13K(-6.10%)Reduced	SEC filing ↗ May 14, 2024	▾
14	BAKER BROS. ADVISORS LP CIK 1263508 · View history	$68.47M 1,466,547 shares	0.86%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
15	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$62.57M 1,339,826 shares	0.01%	+56.20K(+4.40%)Added	SEC filing ↗ May 13, 2024	▾
16	DEUTSCHE BANK AG\ CIK 948046 · Amended · View history	$56.37M 1,207,225 shares	0.03%	+34.36K(+2.90%)Added	SEC filing ↗ Jun 2, 2025	▾
17	Pictet Asset Management Holding SA CIK 1993888 · View history	$48.46M 1,036,374 shares	0.05%	+13.24K(+1.30%)Added	SEC filing ↗ May 14, 2024	▾
18	MARSHALL WACE, LLP CIK 1318757 · View history	$45.24M 968,990 shares	0.07%	-520.50K(-34.90%)Reduced	SEC filing ↗ May 15, 2024	▾
19	Avidity Partners Management LP CIK 1791827 · View history	$43.59M 933,500 shares	1.55%	+89.00K(+10.50%)Added	SEC filing ↗ May 15, 2024	▾
20	Bank of New York Mellon Corp CIK 1390777 · View history	$42.57M 911,656 shares	0.01%	-99.17K(-9.80%)Reduced	SEC filing ↗ Apr 25, 2024	▾

Showing 20 / 271 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

271

Cancelled or null records excluded

Disclosed shares

79,923,102

Not deduplicated across managers

Disclosed value

$3.73B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Ultragenyx Pharmaceutical Inc. · Q1 2024

Explore all 271 reporting institutions.

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.