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Super Investors OAKTOP CAPITAL MANAGEMENT II, L.P.
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OAKTOP CAPITAL MANAGEMENT II, L.P.

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$2.35B
Positions
14
Quarter ended
June 30, 2026
Filed
August 07, 2026

Reported portfolio value by quarter (53 quarters reported)

$2.35B $327M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$332M in Q2 2013 → $2.35B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Kla Corp 39.2% Added 883% 3,053,730 $921M
Lam Research Corp 38.0% Trimmed 8.4% 2,061,054 $893M
Analog Devices Inc 7.9% Unchanged 466,196 $185M
Broadcom Inc 5.8% Unchanged 362,760 $137M
Dell Technologies Inc 2.4% Unchanged 130,619 $56.4M
Aspen Aerogels Inc 1.4% Unchanged 5,168,674 $32.8M
Bristol-myers Squibb Co 1.2% Unchanged 479,991 $27.7M
Ceva Inc 0.9% Unchanged 446,377 $21.1M
Pinterest Inc 0.9% Added 12% 950,000 $20M
Progress Software Corp 0.7% Unchanged 508,608 $17.1M
Egain Corp 0.7% Unchanged 2,671,843 $16.8M
Garmin Ltd 0.5% Unchanged 48,000 $11.4M
Arm Holdings PLC 0.3% Unchanged 20,000 $7.09M
Intel Corp 0.1% Unchanged 23,010 $3.21M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 07, 2026

Company Action Shares changed Value of change % of portfolio
Kla Corp Added +2,742,992 +$828M 39.2%
Lam Research Corp Trimmed −188,340 −$81.6M 38.0%
Pinterest Inc Added +100,000 +$2.1M 0.9%

Q1 2026

quarter ended March 31, 2026 · filed May 14, 2026

Company Action Shares changed Value of change % of portfolio
Lam Research Corp Trimmed −141,390 −$30.2M 35.9%
Pinterest Inc Added +200,000 +$3.67M 1.2%
Arm Holdings PLC New +20,000 +$3.03M 0.2%
Aspen Aerogels Inc Added +774,149 +$2.65M 1.3%

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Lam Research Corp Trimmed −300,676 −$51.5M 34.7%
Kla Corp Trimmed −18,137 −$22M 32.0%
Pinterest Inc Added +300,000 +$7.77M 1.4%
Carparts Com Inc Exited −4,597,302 −$3.27M —
Petmed Express Inc Exited −435,844 −$1.09M —

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
Kla Corp Trimmed −12,124 −$13.1M 32.1%

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
Kla Corp Trimmed −23,112 −$20.7M 32.9%
Ceva Inc Trimmed −185,000 −$4.07M 1.1%

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
Kla Corp Trimmed −17,964 −$12.2M 33.0%
Aspen Aerogels Inc Added +654,000 +$4.18M 3.7%
Pinterest Inc Added +50,000 +$1.55M 1.4%

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
Lam Research Corp Exited −269,146 −$220M —
Lam Research Corp New +2,691,460 +$194M 24.3%
Kla Corp Trimmed −9,506 −$5.99M 30.1%
Aspen Aerogels Inc Added +200,000 +$2.38M 5.5%
Pinterest Inc Added +50,000 +$1.45M 1.1%
Carparts Com Inc Added +872,117 +$942K 0.6%

Q3 2024

quarter ended September 30, 2024 · filed November 13, 2024

Company Action Shares changed Value of change % of portfolio
Broadcom Inc Added +326,484 +$56.3M 6.8%
Bristol-myers Squibb Co Trimmed −200,000 −$10.3M 2.7%
Aspen Aerogels Inc Added +200,000 +$5.54M 10.7%
Pinterest Inc Added +150,000 +$4.86M 0.9%
Kla Corp Trimmed −1,213 −$939K 33.1%
Grab Holdings Limited Exited −100,000 −$355K —

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