Question 1

Does State of Wisconsin Investment Board own ONTO stock?

Accepted Answer

Yes. As of its Q2 2026 13F, State of Wisconsin Investment Board holds 55,298 shares of ONTO (Onto Innovation), worth $20.9M.

Question 2

How many shares of ONTO does State of Wisconsin Investment Board own?

Accepted Answer

As of its Q2 2026 13F, State of Wisconsin Investment Board holds 55,298 shares of ONTO (Onto Innovation).

Question 3

What is State of Wisconsin Investment Board's ONTO position worth?

Accepted Answer

As of its Q2 2026 13F, State of Wisconsin Investment Board's ONTO position is worth $20.9M.

Question 4

Is State of Wisconsin Investment Board buying or selling ONTO?

Accepted Answer

In Q2 2026, State of Wisconsin Investment Board reduced its ONTO position by 8,033 shares (-12.7%).

Question 5

When did State of Wisconsin Investment Board first buy ONTO?

Accepted Answer

State of Wisconsin Investment Board already held ONTO in its Q4 2019 13F, the earliest on record, and has listed it in 27 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	55,298	-12.7%	$20.9M	0.0%	$378.45	0
2026-Q1	Decreased	63,331	-5.4%	$13M	0.0%	$205.07	0
2025-Q4	Increased	66,916	+9.3%	$10.6M	0.0%	$157.86	30
2025-Q3	Decreased	61,235	-0.1%	$7.9M	0.0%	$129.22	0
2025-Q2	Decreased	61,275	-6.4%	$6.2M	0.0%	$100.93	0
2025-Q1	Increased	65,445	+9.5%	$7.9M	0.0%	$121.34	30
2024-Q4	Increased	59,778	+13.4%	$10M	0.0%	$166.67	31
2024-Q3	Decreased	52,700	-2.7%	$10.9M	0.0%	$215.37	0