Driehaus Capital Management’s Onto Innovation ONTO Stock Holding History

Driehaus Capital Management’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	$65.7M	Sell	320,534 -28,480	-8%	-$5.83M	0.48%	60
2025 Q4	$55.1M	Buy	349,014 +248,544	+247%	+$35.3M	0.37%	88
2025 Q3	$13M	Buy	+100,470	New	+$10.8M	0.09%	247
2024 Q4	–	Sell	-97,311	Closed	-$20.2M	–	436
2024 Q3	$20.2M	Sell	97,311 -438,458	-82%	-$88.5M	0.17%	169
2024 Q2	$118M	Buy	535,769 +10,328	+2%	+$2.13M	1.14%	14
2024 Q1	$95.1M	Sell	525,441 -44,470	-8%	-$7.51M	0.95%	18
2023 Q4	$87.1M	Buy	569,911 +190,666	+50%	+$25.6M	1.05%	14
2023 Q3	$48.4M	Buy	+379,245	New	+$45.1M	0.63%	36

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 $2.9T AUM 29.55% 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

Driehaus Capital Management's ONTO Position: Q1 2026 in Review

Driehaus Capital Management reduced its Onto Innovation (ONTO) stake by 8.2% in Q1 2026, selling an estimated $5.83M and leaving 320,534 shares worth $65.7M. The position accounts for 0.48% of the portfolio, ranked #60.

Driehaus Capital Management first reported a position in ONTO in Q3 2023 and has held it in 8 quarters since. The position peaked at $118M in Q2 2024. 574 funds tracked by Wall St. Rank hold ONTO as of Q1 2026.

Driehaus Capital Management held 320,534 shares of Onto Innovation worth $65.7M as of Q1 2026.
Driehaus Capital Management sold 28,480 Onto Innovation shares in Q1 2026, an estimated $5.83M.
Onto Innovation made up 0.48% of Driehaus Capital Management's portfolio in Q1 2026, its #60 holding.
Driehaus Capital Management first reported a position in Onto Innovation in Q3 2023 and has held it in 8 quarters since.
Driehaus Capital Management's Onto Innovation position peaked at $118M in Q2 2024.
574 funds tracked by Wall St. Rank held Onto Innovation as of Q1 2026.

Based on Driehaus Capital Management's 13F filing for Q1 2026, filed 15 May 2026.