MASSACHUSETTS FINANCIAL SERVICES CO /MA/
Position in BLLN — BillionToOne, Inc.
CIK 912938
Boston, MA
Position in BLLN
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$9,475,659
-$3,121,032 QoQ
Shares Held
78,977
-50.5% QoQ
Ownership
0.167%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#37
of 156 holders
Holding Since
Dec 2025
3 quarters on record
Voting authority
Sole 99%
Shared 1%
None 0%
Common Shares in BLLN Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $7,261,067,923 across 19 Diagnostics & Research names. BLLN ranks #15 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | WAT |
Waters Corp /De/
|
4,625,035 | $1,734,573,121 | |
| 2 | TMO |
Thermo Fisher Scientific Inc.
|
2,965,714 | $1,486,890,367 | |
| 3 | A |
Agilent Technologies, Inc.
|
10,010,867 | $1,329,743,461 | |
| 4 | DHR |
Danaher Corp /De/
|
3,878,641 | $738,803,535 | |
| 5 | NTRA |
Natera, Inc.
|
1,971,391 | $535,134,085 | |
| 6 | ICLR |
Icon PLC
|
2,105,171 | $365,689,252 | |
| 7 | ILMN |
Illumina, Inc.
|
1,744,209 | $306,684,265 | |
| 8 | IDXX |
Idexx Laboratories Inc /De
|
336,986 | $177,402,907 |
All Filings in BLLN
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $9,475,659 | 78,977 | Shares | Defined | 2026-08-03 | |
| 2026-03-31 | $12,596,691 | 159,573 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $13,372,655 | 163,400 | Shares | Sole | 2026-01-22 | |
| No filing history on record for this holder in this stock. | ||||||