What does CUSIP 90400D108 represent in this 13F holders report?

CUSIP 90400D108 is the security identifier for RARE - Ultragenyx Pharmaceutical Inc. - COMMON STOCK used to aggregate holder disclosures.

How many institutions held RARE - Ultragenyx Pharmaceutical Inc. - COMMON STOCK in Q1 2026?

294 institutional investors reported RARE - Ultragenyx Pharmaceutical Inc. - COMMON STOCK for Q1 2026. Use the holders table for investor-level position and value details.

Ultragenyx Pharmaceutical Inc. - COMMON STOCK (RARE)

CUSIP: 90400D108

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / COMMON STOCK
Total 13F shares: 98,106,451
Total 13F value: $2,053,507,068
Share change: +3,604,942
Put/Call ratio: 72%
SEC-reported price per share: $20.95
Number of holders: 294
Value change: +$63,365,000
Number of buys: 179
Number of sells: 127
Shares outstanding: 97,758,190

Security key

90400D108

Report period

Q1 2026

Institutions

294

Top holders

RARE full security history Ownership snapshot Full 13F holder table Ultragenyx Pharmaceutical Inc. SEC filings Ultragenyx Pharmaceutical Inc. company facts

Broader feeds

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Ownership snapshot

Top reported holders of RARE - Ultragenyx Pharmaceutical Inc. - COMMON STOCK (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

SANDS CAPITAL MANAGEMENT,...

Disclosed value leader

VANGUARD GROUP INC

Comparable rows

15/15

Latest evidence

31 Dec 2025

13D/G 13F Lead comparable stake: 4.7% 13D/G row: SANDS CAPITAL MANAGEMENT, LLC Showing 1-6 of 15 holder rows.

Quick read

SANDS CAPITAL MANAGEMENT, LLC leads the comparable SEC ownership view at 4.7%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens SANDS CAPITAL MANAGEMENT, LLC's linked filing trail.

Comparable ownership Top 5

SANDS CAPITAL MANAGEMENT, LLC 4.7%

FMR LLC 3.5%

WELLINGTON MANAGEMENT GROUP LLP 2.7%

VANGUARD GROUP INC 10%

BlackRock, Inc. 6.8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
SANDS CAPITAL MANAGEMENT, LLC	13D/G 13F Company 13D/G 13F	4.7%	$163,238,154 4,298,003 shares	$0	31 Dec 2024
FMR LLC	13D/G 13F Company 13D/G 13F	3.5%	$77,001,475 3,347,890 shares	-$106,192,081	31 Dec 2025
WELLINGTON MANAGEMENT GROUP LLP	13D/G 13F Company 13D/G 13F	2.7%	$93,337,483 2,457,543 shares	$0	31 Dec 2024
VANGUARD GROUP INC	13F Company 13F	10%	$236,067,745 10,263,815 shares	—	31 Dec 2025
BlackRock, Inc.	13F Company 13F	6.8%	$152,525,742 6,631,554 shares	—	31 Dec 2025
STATE STREET CORP	13F Company 13F	4.4%	$98,970,058 4,303,046 shares	—	31 Dec 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

294

98,106,451

Rows available

294

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q1 2026 Across Filers

Q1 2026 holders

294

Q1 2026 holders

294

Holder diff

Investor	Q1 2026 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q1 2026 value	Q1 2026 value	Value change	Value Chg %