Position in WAT
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$3,118,859
+$183,153 QoQ
Shares Held
10,473
+35.5% QoQ
Ownership
0.011%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
21 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.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, 2026FIRST MANHATTAN CO. LLC. holds $889,845,439 across 13 Diagnostics & Research names. WAT ranks #5 (0.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | DHR |
Danaher Corp /De/
|
2,338,542 | $443,387,563 | |
| 2 | TMO |
Thermo Fisher Scientific Inc.
|
767,160 | $377,082,154 | |
| 3 | IQV |
Iqvia Holdings Inc.
|
300,056 | $51,171,550 | |
| 4 | A |
Agilent Technologies, Inc.
|
67,234 | $7,663,331 | |
| 5 | WAT |
Waters Corp /De/
This page
|
10,473 | $3,118,859 | |
| 6 | MTD |
Mettler Toledo International Inc/
|
2,291 | $2,889,409 | |
| 7 | PSNL |
Personalis, Inc.
|
230,600 | $1,468,922 | |
| 8 | ILMN |
Illumina, Inc.
|
9,058 | $1,116,489 |
All Filings in WAT
Export CSV
21 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,118,859 | 10,473 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $2,935,706 | 7,729 | Shares | Sole | 2026-02-17 | |
| 2025-03-31 | $359,355 | 975 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $361,705 | 975 | Shares | Sole | 2025-02-14 | |
| 2024-03-31 | $137,692 | 400 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $131,692 | 400 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $109,684 | 400 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $106,616 | 400 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $123,852 | 400 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $137,032 | 400 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $512,107 | 1,900 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $628,862 | 1,900 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $15,108,543 | 48,676 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $17,987,637 | 48,276 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $17,249,014 | 48,276 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $16,166,253 | 46,776 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $13,292,335 | 46,776 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $11,573,317 | 46,776 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $9,153,127 | 46,776 | Shares | Sole | 2020-11-12 | |
| 2020-06-30 | $8,440,194 | 46,786 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $8,517,391 | 46,786 | Shares | Sole | 2020-05-06 | |
| No filing history on record for this holder in this stock. | ||||||