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WELLINGTON MANAGEMENT GROUP LLP

Position in RARE — Ultragenyx Pharmaceutical Inc.

CIK 902219 Boston, MA

Position in RARE

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$55,325,009
-$1,298,921 QoQ
Shares Held
2,640,812
+7.3% QoQ
Ownership
2.68%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 0.ToString("F0")% Shared 85.66141777604767.ToString("F0")% None 14.33858222395233.ToString("F0")%

Common Shares in RARE Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

WELLINGTON MANAGEMENT GROUP LLP holds $14,418,547,095 across 180 Biotechnology names. RARE ranks #46 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in RARE

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $55,325,009 2,640,812
2025-12-31 $56,623,930 2,461,910
2025-09-30 $58,509,478 1,945,129
2025-06-30 $68,059,373 1,871,820
2025-03-31 $88,696,320 2,449,498
2024-12-31 $103,388,831 2,457,543
2024-09-30 $231,389,301 4,165,424
2024-06-30 $187,258,462 4,556,167
2024-03-31 $191,334,449 4,097,975
2023-12-31 $211,126,685 4,415,029
2023-09-30 $185,233,119 5,195,880
2023-06-30 $238,839,042 5,177,521
2023-03-31 $204,555,993 5,101,147
2022-12-31 $241,040,346 5,202,684
2022-09-30 $250,366,431 6,046,038
2022-06-30 $263,365,488 4,414,440
2022-03-31 $244,747,189 3,370,245
2021-12-31 $241,960,815 2,877,403
2021-09-30 $226,221,320 2,508,275
2021-06-30 $38,099,094 399,571
2021-03-31 $72,786,369 639,262
2020-12-31 $92,358,695 667,187
2020-09-30 $61,940,354 753,624
2020-06-30 $47,994,695 613,586
2020-03-31 $37,168,226 836,557