Grantham, Mayo, Van Otterloo & Co (GMO)’s Onto Innovation ONTO Stock Holding History

Grantham, Mayo, Van Otterloo & Co (GMO)’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	$28M	Buy	+136,474	New	+$27.9M	0.07%	136
2025 Q2	–	Sell	-284,587	Closed	-$34.5M	–	667
2025 Q1	$34.5M	Buy	+284,587	New	+$47.9M	0.11%	123
2020 Q3	–	Sell	-11,437	Closed	-$389K	–	809
2020 Q2	$389K	Sell	11,437 -105,050	-90%	-$3.41M	﹤0.01%	658
2020 Q1	$3.46M	Buy	116,487 +63,787	+121%	+$2.18M	0.03%	300
2019 Q4	$1.93M	Buy	52,700 +25,500	+94%	+$866K	0.01%	415
2019 Q3	$887K	Buy	+27,200	New	+$847K	0.01%	563

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

Grantham, Mayo, Van Otterloo & Co (GMO)'s ONTO Position: Q1 2026 in Review

Grantham, Mayo, Van Otterloo & Co (GMO) opened a new position in Onto Innovation (ONTO) in Q1 2026: 136,474 shares worth $28M. The stake represents 0.07% of the portfolio and ranks #136 among its holdings. This is a return to the name: Grantham, Mayo, Van Otterloo & Co (GMO) previously reported a position in ONTO as recently as Q1 2025.

Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in ONTO in Q3 2019 and has held it in 6 quarters since. The position peaked at $34.5M in Q1 2025. 574 funds tracked by Wall St. Rank hold ONTO as of Q1 2026.

Grantham, Mayo, Van Otterloo & Co (GMO) held 136,474 shares of Onto Innovation worth $28M as of Q1 2026.
Onto Innovation was a new Grantham, Mayo, Van Otterloo & Co (GMO) position in Q1 2026.
Onto Innovation made up 0.07% of Grantham, Mayo, Van Otterloo & Co (GMO)'s portfolio in Q1 2026, its #136 holding.
Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in Onto Innovation in Q3 2019 and has held it in 6 quarters since.
Grantham, Mayo, Van Otterloo & Co (GMO)'s Onto Innovation position peaked at $34.5M in Q1 2025.
574 funds tracked by Wall St. Rank held Onto Innovation as of Q1 2026.

Based on Grantham, Mayo, Van Otterloo & Co (GMO)'s 13F filing for Q1 2026, filed 14 May 2026.