MASSACHUSETTS FINANCIAL SERVICES CO /MA/
Position in BLLN — BillionToOne, Inc.
CIK 912938
Boston, MA
Position in BLLN
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$12,596,691
-$775,964 QoQ
Shares Held
159,573
-2.3% QoQ
Ownership
0.347%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2025
2 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 Mar 31, 2026MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $6,634,384,911 across 18 Diagnostics & Research names. BLLN ranks #17 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
|
3,013,109 | $1,481,033,464 | |
| 2 | A |
Agilent Technologies, Inc.
|
12,624,090 | $1,438,893,775 | |
| 3 | WAT |
Waters Corp /De/
|
4,630,118 | $1,378,849,136 | |
| 4 | DHR |
Danaher Corp /De/
|
4,165,769 | $789,829,800 | |
| 5 | NTRA |
Natera, Inc.
|
2,040,106 | $408,000,796 | |
| 6 | ICLR |
Icon PLC
|
2,727,824 | $301,861,000 | |
| 7 | MTD |
Mettler Toledo International Inc/
|
148,743 | $187,594,670 | |
| 8 | CRL |
Charles River Laboratories International, Inc.
|
908,850 | $156,776,623 |
All Filings in BLLN
Export CSV
2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 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. | ||||||