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 306 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	$304.79M 10,132,728 shares	0.00%	-80.69K(-0.80%)Reduced	SEC filing ↗ Nov 7, 2025	▾
02	FMR LLC CIK 315066 · View history	$219.08M 7,283,296 shares	0.01%	+4.68M(+179.60%)Added	SEC filing ↗ Nov 13, 2025	▾
03	BlackRock, Inc. CIK 2012383 · View history	$193.27M 6,425,263 shares	0.00%	+169.12K(+2.70%)Added	SEC filing ↗ Nov 12, 2025	▾
04	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$120.66M 4,011,429 shares	0.01%	+750.56K(+23.00%)Added	SEC filing ↗ Nov 26, 2025	▾
05	SANDS CAPITAL MANAGEMENT, LLC CIK 1020066 · View history	$113.40M 3,769,853 shares	0.31%	-173.63K(-4.40%)Reduced	SEC filing ↗ Nov 13, 2025	▾
06	STATE STREET CORP CIK 93751 · View history	$111.07M 3,692,487 shares	0.00%	+1.12M(+43.60%)Added	SEC filing ↗ Nov 14, 2025	▾
07	RTW INVESTMENTS, LP CIK 1493215 · View history	$98.01M 3,258,266 shares	1.21%	+1.55M(+90.80%)Added	SEC filing ↗ Nov 14, 2025	▾
08	BAKER BROS. ADVISORS LP CIK 1263508 · View history	$83.40M 2,772,692 shares	0.60%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
09	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$69.49M 2,310,174 shares	0.01%	-576.09K(-20.00%)Reduced	SEC filing ↗ Nov 14, 2025	▾
10	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$65.21M 2,167,729 shares	0.26%	+1.86M(+614.10%)Added	SEC filing ↗ Nov 17, 2025	▾
11	SUVRETTA CAPITAL MANAGEMENT, LLC CIK 1569064 · View history	$60.73M 2,019,000 shares	1.84%	-259.00K(-11.40%)Reduced	SEC filing ↗ Nov 14, 2025	▾
12	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$58.51M 1,945,129 shares	0.01%	+73.31K(+3.90%)Added	SEC filing ↗ Nov 14, 2025	▾
13	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$47.55M 1,580,507 shares	0.00%	-132.42K(-7.70%)Reduced	SEC filing ↗ Nov 12, 2025	▾
14	DEUTSCHE BANK AG\ CIK 948046 · View history	$46.51M 1,546,101 shares	0.02%	-119.75K(-7.20%)Reduced	SEC filing ↗ Nov 13, 2025	▾
15	BNP PARIBAS ASSET MANAGEMENT Holding S.A. CIK 1520354 · View history	$46.48M 1,545,279 shares	0.12%	+93.15K(+6.40%)Added	SEC filing ↗ Nov 7, 2025	▾
16	Pictet Asset Management Holding SA CIK 1993888 · View history	$43.99M 1,458,187 shares	0.04%	-241.76K(-14.20%)Reduced	SEC filing ↗ Nov 18, 2025	▾
17	Rock Springs Capital Management LP CIK 1595725 · View history	$37.49M 1,246,341 shares	2.19%	-144.73K(-10.40%)Reduced	SEC filing ↗ Nov 14, 2025	▾
18	GW&K Investment Management, LLC CIK 1082917 · View history	$34.60M 1,150,169 shares	0.31%	+668.88K(+139.00%)Added	SEC filing ↗ Nov 12, 2025	▾
19	Schonfeld Strategic Advisors LLC CIK 1665241 · View history	$34.43M 1,144,589 shares	0.24%	+577.41K(+101.80%)Added	SEC filing ↗ Nov 14, 2025	▾
20	FRONTIER CAPITAL MANAGEMENT CO LLC CIK 351173 · View history	$32.16M 1,069,098 shares	0.29%	+543.63K(+103.50%)Added	SEC filing ↗ Nov 14, 2025	▾

Showing 20 / 306 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

306

Cancelled or null records excluded

Disclosed shares

95,481,069

Not deduplicated across managers

Disclosed value

$2.87B

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. · Q3 2025

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Sources, coverage & how to read this data

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.