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Oberweis Asset Management’s Onto Innovation ONTO Stock Holding History

Oberweis Asset 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
2025
Q2 		– Sell
-129,175
Closed -$15.7M – 202
2025
Q1 		$15.7M Sell
129,175
-60
-0% -$10.1K 0.78% 47
2024
Q4 		$21.5M Hold
129,235
– – 1.02% 23
2024
Q3 		$26.8M Sell
129,235
-310
-0.2% -$62.6K 1.37% 7
2024
Q2 		$28.4M Buy
129,545
+22,615
+21% +$4.67M 1.74% 4
2024
Q1 		$19.4M Buy
106,930
+62,330
+140% +$10.5M 1.4% 4
2023
Q4 		$6.82M Buy
44,600
+3,500
+9% +$471K 0.64% 52
2023
Q3 		$5.24M Buy
+41,100
New +$4.89M 0.56% 62

Other funds holding ONTO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
PCMI
Paradigm Capital Management Inc Albany, New York $3.67B AUM 121.12% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
GCM
Geneva Capital Management Milwaukee, Wisconsin $4.36B AUM 17.81% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Oberweis Asset Management's ONTO Position: Q2 2025 in Review

Oberweis Asset Management sold out of Onto Innovation (ONTO) in Q2 2025, closing a stake of 129,175 shares — an estimated $15.7M sold.

Oberweis Asset Management first reported a position in ONTO in Q3 2023 and held it in 7 quarters. The position peaked at $28.4M in Q2 2024. 447 funds tracked by Wall St. Rank hold ONTO as of Q2 2025.

  • Oberweis Asset Management reported no remaining Onto Innovation position as of Q2 2025 after selling out during the quarter.
  • Oberweis Asset Management sold 129,175 Onto Innovation shares in Q2 2025, an estimated $15.7M.
  • Oberweis Asset Management first reported a position in Onto Innovation in Q3 2023 and held it in 7 quarters.
  • Oberweis Asset Management's Onto Innovation position peaked at $28.4M in Q2 2024.
  • 447 funds tracked by Wall St. Rank held Onto Innovation as of Q2 2025.

Based on Oberweis Asset Management's 13F filing for Q2 2025, filed 14 Aug 2025.