L3VLUP
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RARE in the 13F filings

Ultragenyx Pharmaceutical In · CUSIP 90400D108

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2024
the date the book describes
Filed
24 May 2024
latest of these filings; the earliest 14 May 2024
Managers listing it
12
at least, of 95 tracked, among listed positions
Comparable managers
93
filed both Q4 2023 and Q1 2024; 8 listed it in both
Shares listed
10,990,603
combined, among listed positions
Reported value
$513m
combined, at the quarter end

Among the 93 comparable managers: 7 buyers (opened or added shares) and 3 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing RARE in Q1 2024

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2023, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

12 of 12 holders

ActionFiling
Wellington Management Group LLP4,097,975$191munder 0.1%Trimmed-317,05415 May 2024 (the filing on sec.gov)
T. Rowe Price Associates Inc3,568,873$167munder 0.1%Added+120,17515 May 2024 (the filing on sec.gov)
Marshall Wace LLP968,990$45m0.07%Trimmed-520,49615 May 2024 (the filing on sec.gov)
Two Sigma Advisers LP448,200$21munder 0.1%Addedn.a.15 May 2024 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC440,798$21m0.14%Added+97,98615 May 2024 (the filing on sec.gov)
Two Sigma Investments LP415,314$19munder 0.1%Addedn.a.15 May 2024 (the filing on sec.gov)
Woodline Partners LP400,124$19m0.17%Held015 May 2024 (the filing on sec.gov)
Hudson Bay Capital Management LP305,100$14m0.08%Trimmed-184,90015 May 2024 (the filing on sec.gov)
Moore Capital Management LP185,000$8.6m0.14%Held015 May 2024 (the filing on sec.gov)
Farallon Capital Management LLC99,000$4.6munder 0.1%Newnew24 May 2024 (the filing on sec.gov)
PDT Partners LLC52,474$2.5m0.23%Added+4,97315 May 2024 (the filing on sec.gov)
Winton Group Ltd8,755$409kunder 0.1%Newnew14 May 2024 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2023 to Q1 2024, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (2)

Exited (0)

No exit shown by a manager’s own filing.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
16 in Q3 2024 to 7 in Q2 2026

Tracked managers listing it, at least.

051015202014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
RARE by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20142$108mn.a.n.a.
Q2 20142$103mn.a.n.a.
Q3 20142$237mn.a.n.a.
Q4 20142$187mn.a.n.a.
Q1 20156$676mn.a.n.a.
Q2 20157$1.2bnn.a.n.a.
Q3 20159$1.3bnn.a.n.a.
Q4 20159$1.7bnn.a.n.a.
Q1 20163$933mn.a.n.a.
Q2 20164$461mn.a.n.a.
Q3 20166$1.1bnn.a.n.a.
Q4 20165$1.2bnn.a.n.a.
Q1 20175$1.1bnn.a.n.a.
Q2 20173$661mn.a.n.a.
Q3 20173$505mn.a.n.a.
Q4 20175$532mn.a.n.a.
Q1 20186$655mn.a.n.a.
Q2 20186$1.3bnn.a.n.a.
Q3 20186$1.3bnn.a.n.a.
Q4 20186$598mn.a.n.a.
Q1 20197$1.3bnn.a.n.a.
Q2 20197$1.3bnn.a.n.a.
Q3 20196$767mn.a.n.a.
Q4 20196$685mn.a.n.a.
Q1 20206$791mn.a.n.a.
Q2 20205$1.5bnn.a.n.a.
Q3 20206$1.6bnn.a.n.a.
Q4 20208$3.0bnn.a.n.a.
Q1 202110$2.6bnn.a.n.a.
Q2 202114$2.3bnn.a.n.a.
Q3 20219$2.0bnn.a.n.a.
Q4 20218$1.6bnn.a.n.a.
Q1 20228$1.5bnn.a.n.a.
Q2 20228$1.1bnn.a.n.a.
Q3 20226$487mn.a.n.a.
Q4 20228$604mn.a.n.a.
Q1 20239$502mn.a.n.a.
Q2 202311$619mn.a.n.a.
Q3 20238$397mn.a.n.a.
Q4 20239$593m72
Q1 202412$513m73
Q2 202413$413m102
Q3 202416$809m96
Q4 202411$243m74
Q1 20258$158m53
Q2 20257$120m43
Q3 20258$94m33
Q4 20255$43m1717
Q1 20265$48m1811
Q2 20267$396m1117

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

RARE and LLY →RARE and JNJ →RARE and VRTX →Choose a stock to compare with RARE →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own RARE, latest filings →Back to the 13F Explorer →