Position in WAT
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$70,093,483
+$62,374,198 QoQ
Shares Held
235,371
+1058.2% QoQ
Ownership
0.240%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 97.53155656389275.ToString("F0")%
Shared 2.4684434361072523.ToString("F0")%
None 0.ToString("F0")%
Common Shares in WAT Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026AMERICAN CENTURY COMPANIES INC holds $1,714,954,358 across 27 Diagnostics & Research names. WAT ranks #9 (4.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | IDXX |
Idexx Laboratories Inc /De
|
599,931 | $337,095,229 | |
| 2 | DHR |
Danaher Corp /De/
|
1,326,812 | $251,563,555 | |
| 3 | LH |
Labcorp Holdings Inc.
|
810,805 | $216,330,882 | |
| 4 | TMO |
Thermo Fisher Scientific Inc.
|
414,395 | $203,687,574 | |
| 5 | DGX |
Quest Diagnostics Inc
|
867,331 | $169,979,529 | |
| 6 | IQV |
Iqvia Holdings Inc.
|
961,429 | $163,962,101 | |
| 7 | NTRA |
Natera, Inc.
|
496,904 | $99,375,830 | |
| 8 | GH |
Guardant Health, Inc.
|
867,537 | $80,134,392 |
All Filings in WAT
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $70,093,483 | 235,371 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $7,719,285 | 20,323 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $5,847,794 | 19,505 | Shares | Defined | 2025-11-12 | |
| 2025-06-30 | $83,251,624 | 238,516 | Shares | Defined | 2025-08-12 | |
| 2025-03-31 | $123,572,306 | 335,275 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $123,383,125 | 332,587 | Shares | Defined | 2025-02-11 | |
| 2024-09-30 | $120,027,633 | 333,512 | Shares | Defined | 2024-11-12 | |
| 2024-06-30 | $93,989,015 | 323,966 | Shares | Defined | 2024-08-07 | |
| 2024-03-31 | $110,430,016 | 320,803 | Shares | Defined | 2024-05-14 | |
| 2023-12-31 | $106,808,138 | 324,418 | Shares | Defined | 2024-02-13 | |
| 2023-06-30 | $165,292,382 | 620,141 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $184,076,892 | 594,506 | Shares | Defined | 2023-05-11 | |
| 2022-12-31 | $185,439,239 | 541,302 | Shares | Defined | 2023-02-13 | |
| 2022-09-30 | $143,887,781 | 533,847 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $37,729,403 | 113,993 | Shares | Defined | 2022-08-12 | |
| 2022-03-31 | $2,165,591 | 6,977 | Shares | Defined | 2022-05-11 | |
| 2021-12-31 | $2,359,303 | 6,332 | Shares | Defined | 2022-02-07 | |
| 2021-09-30 | $1,936,566 | 5,420 | Shares | Defined | 2021-11-10 | |
| 2021-06-30 | $1,631,279 | 4,720 | Shares | Defined | 2021-08-05 | |
| 2021-03-31 | $10,656,943 | 37,502 | Shares | Defined | 2021-05-14 | |
| 2020-12-31 | $628,199 | 2,539 | Shares | Defined | 2021-02-12 | |
| 2020-09-30 | $443,215 | 2,265 | Shares | Defined | 2020-11-13 | |
| 2020-06-30 | $366,031 | 2,029 | Shares | Defined | 2020-08-13 | |
| 2020-03-31 | $303,841 | 1,669 | Shares | Defined | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||