OAKTOP CAPITAL MANAGEMENT II, L.P.
CIK
1550660
Location
Chatham, NJ
Portfolio Value
Small
$928,410,621
Diversification
Highly concentrated
Filing Date
Global Rank
#1,839
/ 8,607
▲ 169
· as of Mar 2026
Top Industry
Semiconductor Equipment & Materials
56.7%
3Y Alpha vs SPY
+1.4%
Period ended 3 months ago
Filed May 14, 2026 · 59d
25 quarters · since Mar 2020
Clone Performance
Jul 2023–Jul 2026 · vs SPYHypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.
Cloned portfolio
+81.0%
SPY
+75.2%
Annualised alpha
+1.3%
Max drawdown
−46.2%
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
51.8%
+3.1 pts
Top 5
87.9%
+1.4 pts
Top 10
97.5%
−0.1 pts
HHI
3,137
Highly concentrated+254
Portfolio Trend
25 quarters · across all stocks
Sector Breakdown
As of Mar 31, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 93.3% | $866,033,302 |
| Healthcare | 3.1% | $29,111,454 |
| Industrials | 1.9% | $17,676,865 |
| Communication Services | 1.7% | $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 ·
$928,410,621 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 | 51.77% | |
| ADI |
Analog Devices Inc
Technology
|
Held | 466,196 | $148,315,595 | 15.98% | |
| AVGO |
Broadcom Inc.
Technology
|
Held | 362,760 | $112,277,847 | 12.09% | |
| KLAC |
Kla Corp
Technology
|
Held | 310,738 | $45,753,373 | 4.93% | |
| BMY |
Bristol Myers Squibb Co
Healthcare
|
Held | 479,991 | $29,111,454 | 3.14% | |
| DELL |
Dell Technologies Inc.
Technology
|
Held | 130,619 | $21,438,496 | 2.31% | |
| EGAN |
EGAIN Corp
Technology
|
Held | 2,671,843 | $21,080,841 | 2.27% | |
| ASPN |
Aspen Aerogels Inc
Industrials
|
Added | 5,168,674 | $17,676,865 | 1.90% | |
| PINS |
Pinterest, Inc.
Communication Services
|
Added | 850,000 | $15,589,000 | 1.68% | |
| PRGS |
Progress Software Corp /Ma
Technology
|
Held | 508,608 | $13,045,795 | 1.41% | |
| GRMN |
Garmin Ltd
Technology
|
Held | 48,000 | $11,136,480 | 1.20% | |
| CEVA |
Ceva Inc
Technology
|
Held | 446,377 | $8,338,322 | 0.90% | |
| ARM |
Arm Holdings PLC /Uk
Technology
|
NEW | 20,000 | $3,025,600 | 0.33% | |
| INTC |
Intel Corp
Technology
|
Held | 23,010 | $1,015,431 | 0.11% |