OAKTOP CAPITAL MANAGEMENT II, L.P.
CIK
1550660
Location
Chatham, NJ
Portfolio Value
Mid
$1,340,190,986
Diversification
Highly concentrated
Filing Date
Global Rank
#1,255
/ 8,232
▲ 224
Top Industry
Semiconductor Equipment & Materials
70.0%
3Y Alpha vs SPY
+12.1%
Period ended 2 months ago
Filed May 14, 2026 · 31d
25 quarters · since Mar 2020
Clone Performance
Jun 2023–Jun 2026 · vs SPYHypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.
Cloned portfolio
+134.8%
SPY
+76.3%
Annualised alpha
+12.1%
Max drawdown
−35.7%
Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.
Portfolio Concentration
14 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025Top Position
35.9%
+1.2 pts
Top 5
91.6%
+1.2 pts
Top 10
98.2%
−0.0 pts
HHI
2,659
Highly concentrated+184
Portfolio Trend
25 quarters · across all stocks
Sector Breakdown
As of Mar 31, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 95.3% | $1,277,813,667 |
| Healthcare | 2.2% | $29,111,454 |
| Industrials | 1.3% | $17,676,865 |
| Communication Services | 1.2% | $15,589,000 |
Last Quarter's Activity
Export CSVTrimmed
Positions the filer reduced
1 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| LRCX | Lam Research Corp | −141,390 | 2,249,394 | $480,605,522 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarter
1 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| ARM | Arm Holdings PLC /Uk | 20,000 | $3,025,600 | |
| No positions match the current search. | ||||
Sold Out
Positions the filer fully exitedNo qualifying positions this quarter.
14 positions ·
$1,340,190,986 total
· as of Mar 31, 2026
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| LRCX |
Lam Research Corp
Technology
|
Reduced | 2,249,394 | $480,605,522 | 35.86% | |
| KLAC |
Kla Corp
Technology
|
Held | 310,738 | $457,533,738 | 34.14% | |
| ADI |
Analog Devices Inc
Technology
|
Held | 466,196 | $148,315,595 | 11.07% | |
| AVGO |
Broadcom Inc.
Technology
|
Held | 362,760 | $112,277,847 | 8.38% | |
| BMY |
Bristol Myers Squibb Co
Healthcare
|
Held | 479,991 | $29,111,454 | 2.17% | |
| DELL |
Dell Technologies Inc.
Technology
|
Held | 130,619 | $21,438,496 | 1.60% | |
| EGAN |
EGAIN Corp
Technology
|
Held | 2,671,843 | $21,080,841 | 1.57% | |
| ASPN |
Aspen Aerogels Inc
Industrials
|
Added | 5,168,674 | $17,676,865 | 1.32% | |
| PINS |
Pinterest, Inc.
Communication Services
|
Added | 850,000 | $15,589,000 | 1.16% | |
| PRGS |
Progress Software Corp /Ma
Technology
|
Held | 508,608 | $13,045,795 | 0.97% | |
| GRMN |
Garmin Ltd
Technology
|
Held | 48,000 | $11,136,480 | 0.83% | |
| CEVA |
Ceva Inc
Technology
|
Held | 446,377 | $8,338,322 | 0.62% | |
| ARM |
Arm Holdings PLC /Uk
Technology
|
NEW | 20,000 | $3,025,600 | 0.23% | |
| INTC |
Intel Corp
Technology
|
Held | 23,010 | $1,015,431 | 0.08% |