Question 1

How many shares of ONTO does DRIEHAUS CAPITAL MANAGEMENT LLC own?

Accepted Answer

As of 2026-Q2, DRIEHAUS CAPITAL MANAGEMENT LLC holds 354,650 shares of ONTO (ONTO INNOVATION INC).

Question 2

What is DRIEHAUS CAPITAL MANAGEMENT LLC's ONTO position worth?

Accepted Answer

As of 2026-Q2, DRIEHAUS CAPITAL MANAGEMENT LLC's ONTO position is worth $134.2M.

Question 3

Is DRIEHAUS CAPITAL MANAGEMENT LLC buying or selling ONTO?

Accepted Answer

In 2026-Q2, DRIEHAUS CAPITAL MANAGEMENT LLC increased their ONTO position (+10.6% change in shares).

Question 4

When did DRIEHAUS CAPITAL MANAGEMENT LLC first buy ONTO?

Accepted Answer

Based on available 13F filings, DRIEHAUS CAPITAL MANAGEMENT LLC first reported a position in ONTO in 2023-Q3. They have held the position across 10 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	354,650	+10.6%	$134.2M	0.8%	$378.45	47
2026-Q1	Decreased	320,534	-8.2%	$65.7M	0.5%	$207.50	0
2025-Q4	Increased	349,014	+247.4%	$55.1M	0.4%	$160.01	57
2025-Q3	New	100,470	-	$13M	0.1%	$130.40	39
2024-Q4	Exited	0	-100.0%	$0	0.0%	$167.80	0
2024-Q3	Decreased	97,311	-81.8%	$20.2M	0.2%	$215.37	0
2024-Q2	Increased	535,769	+2.0%	$117.6M	1.1%	$219.56	48
2024-Q1	Decreased	525,441	-7.8%	$95.1M	0.9%	$181.08	0
2023-Q4	Increased	569,911	+50.3%	$87.1M	1.0%	$152.90	65
2023-Q3	New	379,245	-	$48.4M	0.6%	$127.52	57

ONTO10 quarters

ONTO
10 quarters