Robeco Institutional Asset Management B.V.

Position in WAT — Waters Corp /De/

CIK 1418773 ROTTERDAM, P7

Back to WAT Full portfolio

Position in WAT

as of Mar 31, 2026 · filed Apr 21, 2026 Compact

Position Value

$12,315,816

+$2,462,646 QoQ

Shares Held

41,356

+59.4% QoQ

Ownership

0.042%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 60.960924654221884.ToString("F0")% Shared 0.ToString("F0")% None 39.03907534577812.ToString("F0")%

Common Shares in WAT Over Time

Shares Held

Position Value (USD)

Position in Diagnostics & Research

Healthcare · as of Mar 31, 2026

Robeco Institutional Asset Management B.V. holds $811,146,738 across 13 Diagnostics & Research names. WAT ranks #7 (1.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TMO	Thermo Fisher Scientific Inc.	634,639	$311,944,107
2	DHR	Danaher Corp /De/	1,152,606	$218,534,097
3	IDXX	Idexx Laboratories Inc /De	189,760	$106,624,246
4	NTRA	Natera, Inc.	405,713	$81,138,542
5	IQV	Iqvia Holdings Inc.	177,005	$30,186,432
6	DGX	Quest Diagnostics Inc	112,412	$22,030,503
7	WAT	Waters Corp /De/ This page	41,356	$12,315,816
8	MTD	Mettler Toledo International Inc/	7,871	$9,926,905

All Filings in WAT

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$12,315,816	41,356	+59.4%	Shares	Defined	2026-04-21
2025-12-31	$9,853,170	25,941	-10.6%	Shares	Defined	2026-01-23
2025-09-30	$8,700,186	29,019	-94.4%	Shares	Defined	2025-10-22
2025-06-30	$179,928,374	515,495	+16.3%	Shares	Defined	2025-07-18
2025-03-31	$163,394,820	443,321	+5.1%	Shares	Defined	2025-04-23
2024-12-31	$156,438,927	421,691	+7.1%	Shares	Defined	2025-01-23
2024-09-30	$141,757,072	393,890	+34.4%	Shares	Defined	2024-10-29
2024-06-30	$85,028,079	293,079	+0.5%	Shares	Defined	2024-07-23
2024-03-31	$100,414,300	291,707	+16.9%	Shares	Defined	2024-04-24
2023-12-31	$82,141,897	249,497	+1386.1%	Shares	Defined	2024-02-14
2023-09-30	$4,603,711	16,789	-59.6%	Shares	Defined	2023-10-24
2023-06-30	$11,086,731	41,595	-48.0%	Shares	Defined	2023-07-24
2023-03-31	$24,767,613	79,991	+44.3%	Shares	Defined	2023-05-04
2022-12-31	$18,990,579	55,434	-74.1%	Shares	Defined	2023-02-07
2022-09-30	$57,592,092	213,676	-21.8%	Shares	Defined	2022-12-01
2022-06-30	$90,414,468	273,172	-2.5%	Shares	Defined	2022-12-01
2022-03-31	$86,992,074	280,267	-7.0%	Shares	Defined	2022-12-01
2021-12-31	$112,297,541	301,389	+2.2%	Shares	Defined	2022-12-01
2021-09-30	$105,349,905	294,850	-14.5%	Shares	Defined	2022-12-01
2021-06-30	$119,122,089	344,672	+24.7%	Shares	Defined	2022-12-01
2021-03-31	$78,534,073	276,363	+11.2%	Shares	Defined	2022-12-01
2020-12-31	$61,473,973	248,460	+194.6%	Shares	Defined	2022-12-01
2020-09-30	$16,503,259	84,338	+2.9%	Shares	Defined	2021-01-19
2020-06-30	$14,791,537	81,993	+33.7%	Shares	Defined	2021-01-19
2020-03-31	$11,161,485	61,310	—	Shares	Defined	2021-01-19
No filing history on record for this holder in this stock.