O'Rourke & Company’s Waters Corp WAT Stock Holding History

O'Rourke & Company’s Portfolio WAT Stock Details WAT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$521K	Buy	1,751 +1	+0.1%	+$342	0.21%	99
2025 Q4	$665K	Buy	1,750 +80	+5%	+$29.4K	0.26%	87
2025 Q3	$501K	Hold	1,670	–	–	0.21%	96
2025 Q2	$583K	Hold	1,670	–	–	0.27%	80
2025 Q1	$616K	Hold	1,670	–	–	0.31%	72
2024 Q4	$620K	Sell	1,670 -62	-4%	-$22.7K	0.3%	70
2024 Q3	$623K	Hold	1,732	–	–	0.31%	71
2024 Q2	$502K	Hold	1,732	–	–	0.28%	71
2024 Q1	$596K	Sell	1,732 -450	-21%	-$148K	0.35%	64
2023 Q4	$718K	Hold	2,182	–	–	0.46%	47
2023 Q3	$598K	Sell	2,182 -250	-10%	-$69.1K	0.44%	56
2023 Q2	$648K	Hold	2,432	–	–	0.45%	52
2023 Q1	$753K	Sell	2,432 -850	-26%	-$275K	0.57%	43
2022 Q4	$1.12M	Sell	3,282 -300	-8%	-$94.9K	0.89%	30
2022 Q3	$965K	Hold	3,582	–	–	0.84%	33
2022 Q2	$1.19M	Sell	3,582 -2,100	-37%	-$667K	1.01%	29
2022 Q1	$1.76M	Sell	5,682 -400	-7%	-$130K	1.22%	20
2021 Q4	$2.27M	Buy	+6,082	New	+$2.13M	1.51%	18

Other funds holding WAT

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fundsmith LLP London, United Kingdom $12.8B AUM 6.9% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

O'Rourke & Company's WAT Position: Q1 2026 in Review

O'Rourke & Company increased its Waters Corp (WAT) stake by 0.06% in Q1 2026, buying an estimated $342 and bringing the position to 1,751 shares worth $521K. The position accounts for 0.21% of the portfolio, ranked #99.

O'Rourke & Company first reported a position in WAT in Q4 2021 and has held it in 18 quarters since. The position peaked at $2.27M in Q4 2021. 1,170 funds tracked by Wall St. Rank hold WAT as of Q1 2026.

O'Rourke & Company held 1,751 shares of Waters Corp worth $521K as of Q1 2026.
O'Rourke & Company bought 1 Waters Corp share in Q1 2026, an estimated $342.
Waters Corp made up 0.21% of O'Rourke & Company's portfolio in Q1 2026, its #99 holding.
O'Rourke & Company first reported a position in Waters Corp in Q4 2021 and has held it in 18 quarters since.
O'Rourke & Company's Waters Corp position peaked at $2.27M in Q4 2021.
1,170 funds tracked by Wall St. Rank held Waters Corp as of Q1 2026.

Based on O'Rourke & Company's 13F filing for Q1 2026, filed 14 May 2026.