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Tanaka Capital Management’s Onto Innovation ONTO Stock Holding History

Tanaka 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 		$2.55M Sell
12,448
-385
-3% -$78.8K 4.26% 10
2025
Q4 		$2.03M Hold
12,833
– – 3.7% 11
2025
Q3 		$1.66M Buy
+12,833
New +$1.37M 2.99% 12
2025
Q1 		$1.56M Sell
12,833
-1,587
-11% -$267K 3.71% 7
2024
Q4 		$2.4M Sell
14,420
-6
-0% -$1.1K 5.49% 7
2024
Q3 		$3M Sell
14,426
-5,735
-28% -$1.16M 6.93% 6
2024
Q2 		$4.43M Sell
20,161
-380
-2% -$78.5K 10.48% 2
2024
Q1 		$3.72M Sell
20,541
-1,050
-5% -$177K 9.16% 3
2023
Q4 		$3.3M Sell
21,591
-2,305
-10% -$310K 8.07% 3
2023
Q3 		$3.05M Hold
23,896
– – 8.7% 3
2023
Q2 		$2.78M Sell
23,896
-785
-3% -$74.9K 7.52% 2
2023
Q1 		$2.17M Hold
24,681
– – 6.3% 5
2022
Q4 		$1.68M Hold
24,681
– – 5.33% 7
2022
Q3 		$1.58M Hold
24,681
– – 4.72% 7
2022
Q2 		$1.72M Sell
24,681
-5,607
-19% -$415K 5.6% 4
2022
Q1 		$2.63M Sell
30,288
-70
-0.2% -$6.22K 5.31% 5
2021
Q4 		$3.07M Sell
30,358
-810
-3% -$69.9K 5.84% 4
2021
Q3 		$2.25M Sell
31,168
-2,290
-7% -$165K 3.21% 6
2021
Q2 		$2.44M Hold
33,458
– – 3.3% 3
2021
Q1 		$2.2M Sell
33,458
-340
-1% -$20.2K 2.79% 4
2020
Q4 		$1.61M Hold
33,798
– – 3.57% 5
2020
Q3 		$1.01M Sell
33,798
-1,824
-5% -$60.5K 3.15% 8
2020
Q2 		$1.21M Hold
35,622
– – 3.76% 6
2020
Q1 		$1.06M Sell
35,622
-32,333
-48% -$1.11M 4.63% 5
2019
Q4 		$2.48M Buy
67,955
+42,270
+165% +$1.44M 7.87% 3
2019
Q3 		$838K Sell
25,685
-1,146
-4% -$35.7K 2.71% 14
2019
Q2 		$931K Sell
26,831
-1,180
-4% -$37.7K 2.85% 14
2019
Q1 		$865K Sell
28,011
-1,653
-6% -$48.6K 2.61% 17
2018
Q4 		$811K Hold
29,664
– – 2.58% 16
2018
Q3 		$1.11M Hold
29,664
– – 2.59% 16
2018
Q2 		$1.05M Sell
29,664
-610
-2% -$20.9K 2.52% 13
2018
Q1 		$814K Hold
30,274
– – 1.95% 16
2017
Q4 		$75K Buy
30,274
+925
+3% +$24.6K 0.17% 34
2017
Q3 		$845K Buy
29,349
+1,170
+4% +$30.8K 1.88% 17
2017
Q2 		$713K Sell
28,179
-140
-0.5% -$3.95K 1.63% 21
2017
Q1 		$863K Sell
28,319
-252
-0.9% -$6.82K 1.9% 20
2016
Q4 		$716K Sell
28,571
-156
-0.5% -$3.57K 1.68% 20
2016
Q3 		$642K Hold
28,727
– – 1.54% 22
2016
Q2 		$597K Buy
28,727
+705
+3% +$12.4K 1.53% 21
2016
Q1 		$444K Sell
28,022
-3,781
-12% -$52.9K 1% 28
2015
Q4 		$481K Buy
31,803
+6,609
+26% +$96.3K 1.04% 29
2015
Q3 		$306K Hold
25,194
– – 0.77% 28
2015
Q2 		$406K Buy
25,194
+6,263
+33% +$97.8K 1.01% 28
2015
Q1 		$318K Hold
18,931
– – 0.88% 27
2014
Q4 		$318K Sell
18,931
-8,263
-30% -$123K 0.95% 27
2014
Q3 		$427K Sell
27,194
-155
-0.6% -$2.6K 1.24% 21
2014
Q2 		$499K Sell
27,349
-26,248
-49% -$444K 1.32% 24
2014
Q1 		$963K Hold
53,597
– – 2.93% 13
2013
Q4 		$1.02M Buy
53,597
+240
+0.4% +$4.21K 3.01% 13
2013
Q3 		$860K Buy
53,357
+467
+0.9% +$7.03K 2.96% 12
2013
Q2 		$776K Buy
+52,890
New +$764K 2.77% 15

Other funds holding ONTO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 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
VOYA Investment Management
VOYA Investment Management Atlanta, Georgia $116B AUM 61.47% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

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

Tanaka Capital Management reduced its Onto Innovation (ONTO) stake by 3% in Q1 2026, selling an estimated $78.8K and leaving 12,448 shares worth $2.55M. The position accounts for 4.26% of the portfolio, ranked #10.

Tanaka Capital Management first reported a position in ONTO in Q2 2013 and has held it in 51 quarters since. The position peaked at $4.43M in Q2 2024. 579 funds tracked by Wall St. Rank hold ONTO as of Q1 2026.

  • Tanaka Capital Management held 12,448 shares of Onto Innovation worth $2.55M as of Q1 2026.
  • Tanaka Capital Management sold 385 Onto Innovation shares in Q1 2026, an estimated $78.8K.
  • Onto Innovation made up 4.26% of Tanaka Capital Management's portfolio in Q1 2026, its #10 holding.
  • Tanaka Capital Management first reported a position in Onto Innovation in Q2 2013 and has held it in 51 quarters since.
  • Tanaka Capital Management's Onto Innovation position peaked at $4.43M in Q2 2024.
  • 579 funds tracked by Wall St. Rank held Onto Innovation as of Q1 2026.

Based on Tanaka Capital Management's 13F filing for Q1 2026, filed 18 May 2026.