Question 1

How many shares of ONTO does BROWN BROTHERS HARRIMAN & CO own?

Accepted Answer

BROWN BROTHERS HARRIMAN & CO previously held 0 shares of ONTO (ONTO INNOVATION INC) before exiting the position in 2025-Q4.

Question 2

What is BROWN BROTHERS HARRIMAN & CO's ONTO position worth?

Accepted Answer

BROWN BROTHERS HARRIMAN & CO's ONTO position was last reported at $0 in 2025-Q4 before the exit.

Question 3

Is BROWN BROTHERS HARRIMAN & CO buying or selling ONTO?

Accepted Answer

In 2025-Q4, BROWN BROTHERS HARRIMAN & CO exited their ONTO position entirely (-100.0% change in shares).

Question 4

When did BROWN BROTHERS HARRIMAN & CO first buy ONTO?

Accepted Answer

Based on available 13F filings, BROWN BROTHERS HARRIMAN & CO first reported a position in ONTO in 2024-Q3. They have held the position across 25 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2025-Q4 Latest	Exited	0	-100.0%	$0	0.0%	$160.01	0
2025-Q3	Unchanged	2,616	0.0%	$338,040	0.0%	$130.40	0
2025-Q2	Decreased	2,616	-0.1%	$264,033	0.0%	$98.88	0
2025-Q1	Unchanged	2,620	0.0%	$317,911	0.0%	$122.07	0
2024-Q4	Decreased	2,620	-1.9%	$436,675	0.0%	$167.80	0
2024-Q3	Increased	2,671	+1.9%	$554,393	0.0%	$215.37	25