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RARE · Ultragenyx Pharmaceutical Inc.

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$15.30 +0.45 (+3.03%) At close · Sep 4
Market Cap
$1.51B
Shares
98.59M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 317
Total Value: $3,683,933,302
Total Shares: 110,387,462
Showing 1–100 of 328 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 317 13F filers · Δ vs Mar 31, 2026
Top Holder
9.7%
Sep 2023 → Jun 2026 · range 7.3% – 11.3%
+2.4 pts
Top 5
34.4%
Sep 2023 → Jun 2026 · range 26.4% – 36.6%
+8.0 pts
Top 10
49.7%
Sep 2023 → Jun 2026 · range 38.9% – 53.2%
+8.0 pts
HHI
338
Sep 2023 → Jun 2026 · range 251 – 391
Broadly held+87

Quarterly Activity

vs Mar 31, 2026
New
62
Increased
116
Decreased
101
Sold Out
43
Unchanged
38
Holder count: +19
Institutional value: +75.3%
Shares held: +10.1%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 328
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1515673 CUSIP 90400D108 13F (30d) 220 filings 219 filers Visit website Investor relations