Question 1

How many shares of ONTO does FIRST MANHATTAN CO. LLC. own?

Accepted Answer

As of 2026-Q1, FIRST MANHATTAN CO. LLC. holds 20,751 shares of ONTO (ONTO INNOVATION INC).

Question 2

What is FIRST MANHATTAN CO. LLC.'s ONTO position worth?

Accepted Answer

As of 2026-Q1, FIRST MANHATTAN CO. LLC.'s ONTO position is worth $4.3M.

Question 3

Is FIRST MANHATTAN CO. LLC. buying or selling ONTO?

Accepted Answer

In 2026-Q1, FIRST MANHATTAN CO. LLC. decreased their ONTO position (-9.8% change in shares).

Question 4

When did FIRST MANHATTAN CO. LLC. first buy ONTO?

Accepted Answer

Based on available 13F filings, FIRST MANHATTAN CO. LLC. first reported a position in ONTO in 2024-Q2. They have held the position across 26 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price
2026-Q1 Latest	Decreased	20,751	-9.8%	$4.3M	0.0%	$207.50
2025-Q4	Decreased	23,018	-3.5%	$3.6M	0.0%	$160.01
2025-Q3	Decreased	23,853	-2.9%	$3.1M	0.0%	$130.40
2025-Q2	Decreased	24,553	-7.3%	$2.5M	0.0%	$98.88
2025-Q1	Decreased	26,499	-13.7%	$3.2M	0.0%	$122.07
2024-Q4	Decreased	30,702	-0.4%	$5.1M	0.0%	$167.80
2024-Q3	Decreased	30,838	-0.8%	$6.4M	0.0%	$215.37
2024-Q2	Decreased	31,093	-2.3%	$6.8M	0.0%	$219.56