State of Wisconsin Investment Board’s Onto Innovation ONTO Stock Holding History

State of Wisconsin Investment Board’s Portfolio ONTO Stock Details ONTO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$13M	Sell	63,331 -3,585	-5%	-$734K	0.03%	535
2025 Q4	$10.6M	Buy	66,916 +5,681	+9%	+$807K	0.02%	648
2025 Q3	$7.91M	Sell	61,235 -40	-0.1%	-$4.28K	0.02%	760
2025 Q2	$6.18M	Sell	61,275 -4,170	-6%	-$445K	0.02%	856
2025 Q1	$7.94M	Buy	65,445 +5,667	+9%	+$954K	0.02%	730
2024 Q4	$9.96M	Buy	59,778 +7,078	+13%	+$1.29M	0.03%	647
2024 Q3	$10.9M	Sell	52,700 -1,448	-3%	-$292K	0.03%	601
2024 Q2	$11.9M	Sell	54,148 -3,977	-7%	-$822K	0.03%	494
2024 Q1	$10.5M	Sell	58,125 -8,255	-12%	-$1.39M	0.03%	597
2023 Q4	$10.1M	Buy	66,380 +1,337	+2%	+$180K	0.03%	603
2023 Q3	$8.29M	Sell	65,043 -7,125	-10%	-$847K	0.03%	663
2023 Q2	$8.41M	Sell	72,168 -10,074	-12%	-$961K	0.02%	694
2023 Q1	$7.23M	Sell	82,242 -10,051	-11%	-$815K	0.02%	760
2022 Q4	$6.28M	Sell	92,293 -3,044	-3%	-$219K	0.02%	805
2022 Q3	$6.11M	Sell	95,337 -3,080	-3%	-$226K	0.02%	833
2022 Q2	$6.86M	Sell	98,417 -68,483	-41%	-$5.07M	0.02%	829
2022 Q1	$14.5M	Sell	166,900 -3,900	-2%	-$347K	0.03%	590
2021 Q4	$17.3M	Buy	170,800 +400	+0.2%	+$34.5K	0.03%	536
2021 Q3	$12.3M	Sell	170,400 -4,500	-3%	-$324K	0.03%	662
2021 Q2	$12.8M	Buy	174,900 +2,100	+1%	+$144K	0.03%	646
2021 Q1	$11.4M	Hold	172,800	–	–	0.02%	689
2020 Q4	$8.22M	Sell	172,800 -46,500	-21%	-$1.86M	0.02%	772
2020 Q3	$6.53M	Hold	219,300	–	–	0.02%	833
2020 Q2	$7.46M	Hold	219,300	–	–	0.02%	717
2020 Q1	$6.51M	Buy	219,300 +20,200	+10%	+$691K	0.02%	667
2019 Q4	$7.28M	Buy	199,100 +19,100	+11%	+$649K	0.02%	799
2019 Q3	$5.87M	Hold	180,000	–	–	0.02%	783
2019 Q2	$6.25M	Buy	180,000 +115,900	+181%	+$3.7M	0.02%	768
2019 Q1	$1.98M	Buy	64,100 +20,100	+46%	+$591K	0.01%	1012
2018 Q4	$1.2M	Hold	44,000	–	–	﹤0.01%	1080
2018 Q3	$1.65M	Sell	44,000 -16,000	-27%	-$629K	﹤0.01%	1075
2018 Q2	$2.13M	Sell	60,000 -170,000	-74%	-$5.82M	0.01%	989
2018 Q1	$6.19M	Hold	230,000	–	–	0.02%	802
2017 Q4	$5.73M	Hold	230,000	–	–	0.02%	826
2017 Q3	$6.62M	Hold	230,000	–	–	0.02%	766
2017 Q2	$5.82M	Buy	230,000 +5,000	+2%	+$141K	0.02%	784
2017 Q1	$6.85M	Sell	225,000 -27,541	-11%	-$746K	0.03%	672
2016 Q4	$6.33M	Buy	252,541 +42,541	+20%	+$974K	0.03%	648
2016 Q3	$4.69M	Buy	210,000 +10,000	+5%	+$210K	0.02%	791
2016 Q2	$4.16M	Hold	200,000	–	–	0.02%	817
2016 Q1	$3.17M	Hold	200,000	–	–	0.01%	931
2015 Q4	$3.03M	Hold	200,000	–	–	0.01%	963
2015 Q3	$2.43M	Buy	+200,000	New	+$2.83M	0.01%	1054
2014 Q4	–	Sell	-82,131	Closed	-$1.24M	–	1338
2014 Q3	$1.24M	Hold	82,131	–	–	﹤0.01%	1249
2014 Q2	$1.5M	Sell	82,131 -113,857	-58%	-$1.93M	0.01%	1240
2014 Q1	$3.52M	Sell	195,988 -62,482	-24%	-$1.14M	0.01%	929
2013 Q4	$4.92M	Sell	258,470 -25,000	-9%	-$439K	0.02%	799
2013 Q3	$4.57M	Sell	283,470 -41,512	-13%	-$625K	0.02%	803
2013 Q2	$4.77M	Buy	+324,982	New	+$4.7M	0.02%	787

Other funds holding ONTO

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

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

Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return

PCMI

Paradigm Capital Management Inc Albany, New York $2.61B AUM 78.58% 1-Year Est. Return

William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return

VOYA Investment Management Atlanta, Georgia $96.1B AUM 40.06% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State of Wisconsin Investment Board's ONTO Position: Q1 2026 in Review

State of Wisconsin Investment Board reduced its Onto Innovation (ONTO) stake by 5.4% in Q1 2026, selling an estimated $734K and leaving 63,331 shares worth $13M. The position accounts for 0.03% of the portfolio, ranked #535.

State of Wisconsin Investment Board first reported a position in ONTO in Q2 2013 and has held it in 49 quarters since. The position peaked at $17.3M in Q4 2021. 577 funds tracked by Wall St. Rank hold ONTO as of Q1 2026.

State of Wisconsin Investment Board held 63,331 shares of Onto Innovation worth $13M as of Q1 2026.
State of Wisconsin Investment Board sold 3,585 Onto Innovation shares in Q1 2026, an estimated $734K.
Onto Innovation made up 0.03% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #535 holding.
State of Wisconsin Investment Board first reported a position in Onto Innovation in Q2 2013 and has held it in 49 quarters since.
State of Wisconsin Investment Board's Onto Innovation position peaked at $17.3M in Q4 2021.
577 funds tracked by Wall St. Rank held Onto Innovation as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.