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Equibles

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

Position in RARE — Ultragenyx Pharmaceutical Inc.

CIK 912938 Boston, MA
Back to RARE Full portfolio

Position in RARE

as of Jun 30, 2026 · filed Aug 3, 2026
Position Value
$9,111,529
+$3,656,465 QoQ
Shares Held
272,882
+4.8% QoQ
Ownership
0.277%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#63
of 311 holders
Holding Since
Mar 2024
10 quarters on record
Voting authority Sole 98% Shared 2% None 0%

Common Shares in RARE Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $2,249,676,327 across 65 Biotechnology names. RARE ranks #26 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ASND
Ascendis Pharma A/S
 1,875,301 $500,180,281
2 RVMD
Revolution Medicines, Inc.
 2,012,317 $376,866,725
3 VRTX
Vertex Pharmaceuticals Inc / Ma
 423,049 $210,141,127
4 TECH
BIO-TECHNE Corp
 2,746,462 $194,037,538
5 SRRK
Scholar Rock Holding Corp
 2,607,348 $143,404,140
6 LGND
Ligand Pharmaceuticals Inc
 375,762 $118,774,610
7 ALNY
Alnylam Pharmaceuticals, Inc.
 350,560 $105,529,075
8 BNTX
BioNTech SE
 677,708 $63,060,728

All Filings in RARE

Export CSV
10 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $9,111,529 272,882
2026-03-31 $5,455,064 260,385
2025-12-31 $7,132,484 310,108
2025-09-30 $15,074,982 501,163
2025-06-30 $17,693,939 486,632
2025-03-31 $18,178,252 502,023
2024-12-31 $21,065,164 500,717
2024-09-30 $30,128,820 542,373
2024-06-30 $15,217,151 370,247
2024-03-31 $12,464,689 266,967