William Blair Investment Management
ONTO icon

William Blair Investment Management’s Onto Innovation ONTO Stock Holding History

William Blair Investment 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 		$198M Sell
964,213
-762,374
-44% -$156M 0.65% 27
2025
Q4 		$273M Sell
1,726,587
-255,174
-13% -$36.2M 0.76% 24
2025
Q3 		$256M Buy
1,981,761
+882,901
+80% +$94.5M 0.66% 29
2025
Q2 		$111M Buy
1,098,860
+952,419
+650% +$102M 0.29% 91
2025
Q1 		$17.8M Buy
+146,441
New +$24.7M 0.05% 304
2024
Q3 		– Sell
-91,513
Closed -$20.1M – 438
2024
Q2 		$20.1M Sell
91,513
-227,268
-71% -$47M 0.05% 304
2024
Q1 		$57.7M Sell
318,781
-28,065
-8% -$4.74M 0.15% 141
2023
Q4 		$53M Sell
346,846
-7,707
-2% -$1.04M 0.15% 136
2023
Q3 		$45.2M Buy
354,553
+55,969
+19% +$6.65M 0.15% 139
2023
Q2 		$34.8M Buy
+298,584
New +$28.5M 0.11% 198

Other funds holding ONTO

BlackRock
BlackRock New York $5.7T 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
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $57.5B AUM 55.25% 1-Year Est. Return
PCMI
Paradigm Capital Management Inc Albany, New York $2.61B AUM 78.58% 1-Year Est. Return
VOYA Investment Management
VOYA Investment Management Atlanta, Georgia $96.1B AUM 40.06% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Thrivent Financial for Lutherans
Thrivent Financial for Lutherans Minneapolis, Minnesota $52.5B AUM 27.12% 1-Year Est. Return