Skip to main content
Equibles

WELLINGTON MANAGEMENT GROUP LLP

Position in BOLD — Boundless Bio, Inc.

CIK 902219 Boston, MA
Back to BOLD Full portfolio

Position in BOLD

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,390,582
+$778,726 QoQ
Shares Held
556,233
0.0% QoQ
Ownership
2.45%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#7
of 40 holders
Holding Since
Mar 2024
10 quarters on record
Voting authority Sole 0% Shared 100% None 0%

Common Shares in BOLD Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

WELLINGTON MANAGEMENT GROUP LLP holds $15,052,705,482 across 207 Biotechnology names. BOLD ranks #139 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 VRTX
Vertex Pharmaceuticals Inc / Ma
 3,247,658 $1,613,209,155
2 ARGX
Argenx SE
 930,548 $863,334,513
3 REGN
Regeneron Pharmaceuticals, Inc.
 1,270,087 $791,950,042
4 RVMD
Revolution Medicines, Inc.
 3,843,415 $719,794,757
5 ALNY
Alnylam Pharmaceuticals, Inc.
 2,110,407 $635,295,816
6 IONS
Ionis Pharmaceuticals Inc
 7,651,415 $606,680,693
7 CYTK
Cytokinetics Inc
 6,931,770 $590,517,483
8 MDGL
Madrigal Pharmaceuticals, Inc.
 825,714 $443,367,129

All Filings in BOLD

Export CSV
10 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,390,582 556,233
2026-03-31 $611,856 556,233
2025-12-31 $667,479 556,233
2025-09-30 $684,166 556,233
2025-06-30 $561,795 556,233
2025-03-31 $839,911 556,233
2024-12-31 $1,613,075 556,233
2024-09-30 $3,288,212 947,612
2024-06-30 $3,670,313 948,402
2024-03-31 $16,700,614 1,171,973