Arosa Capital Management LP reported 18 positions worth $112.92M for the quarter ended Jun 30, 2026, down 16.6% on the prior quarter. It opened 6 new positions, added to 1, trimmed 10 and exited 30. Its largest holding is Vicor Corp at 42% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| POWI Power Integrations Inc | +125.0K | – | $10.47M | 9.27% |
| MPWR Monolithic Power Systems, Inc. | +7,500 | +166.7% | $10.37M | 14.69% |
| Q Qnity Electronics, Inc. | +50.0K | – | $8.17M | 7.23% |
| CEVA Ceva Inc | +70.0K | – | $3.30M | 2.92% |
| AMBA Ambarella Inc | +35.0K | – | $3.00M | 2.66% |
| FLEX Flex Ltd. | +10.0K | – | $1.62M | 1.44% |
| NEOV NeoVolta Inc. | +320.0K | – | $1.01M | 0.893% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| VICR Vicor Corp | -31.5K | -20.1% | $11.96M | 42.04% |
| ECG Everus Construction Group, Inc. | -88.0K | -100.0% | $10.39M | Exited |
| MTRN MATERION Corp | -21.0K | -84.0% | $6.25M | 1.05% |
| FSLR First Solar, Inc. | -30.5K | -100.0% | $6.02M | Exited |
| PWR Quanta Services, Inc. | -9,418 | -100.0% | $5.17M | Exited |
| AXTI Axt Inc | -67.5K | -79.4% | $4.87M | 1.12% |
| MTZ Mastec Inc | -15.0K | -100.0% | $4.83M | Exited |
| BW Babcock & Wilcox Enterprises, Inc. | -300.0K | -52.2% | $4.23M | 3.43% |
| ROG Rogers Corp | -21.6K | -49.6% | $3.54M | 3.19% |
| STRL Sterling Infrastructure, Inc. | -8,000 | -100.0% | $3.26M | Exited |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| ECG Everus Construction Group, Inc. | -88.0K | $10.39M | 7.67% |
| FSLR First Solar, Inc. | -30.5K | $6.02M | 4.44% |
| PWR Quanta Services, Inc. | -9,418 | $5.17M | 3.82% |
| MTZ Mastec Inc | -15.0K | $4.83M | 3.56% |
| STRL Sterling Infrastructure, Inc. | -8,000 | $3.26M | 2.41% |
| E Eni Spa | -55.0K | $3.11M | 2.3% |
| BE Bloom Energy Corp | -21.7K | $2.94M | 2.17% |
| UUUU Energy Fuels Inc | -155.0K | $2.83M | 2.09% |
| ENPH Enphase Energy, Inc. | -70.4K | $2.66M | 1.97% |
| FPS Forgent Power Solutions, Inc. | -85.0K | $2.49M | 1.84% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | VICR Vicor Corp | Industrials | 125.0K | $47.47M | 42.04% | -31.5K | -20.1% | Reduced | 0.27% |
| 2 | MPWR Monolithic Power Systems, Inc. | Technology | 12.0K | $16.59M | 14.69% | +7,500 | +166.7% | Added | 0.02% |
| 3 | POWI Power Integrations Inc | Technology | 125.0K | $10.47M | 9.27% | +125.0K | – | New | 0.22% |
| 4 | Q Qnity Electronics, Inc. | Basic Materials | 50.0K | $8.17M | 7.23% | +50.0K | – | New | 0.02% |
| 5 | WMB Williams Companies, Inc. | Energy | 60.0K | $4.46M | 3.95% | -15.0K | -20.0% | Reduced | 0% |
| 6 | BW Babcock & Wilcox Enterprises, Inc. | Industrials | 275.0K | $3.88M | 3.43% | -300.0K | -52.2% | Reduced | 0.18% |
| 7 | ROG Rogers Corp | Basic Materials | 22.0K | $3.60M | 3.19% | -21.6K | -49.6% | Reduced | 0.12% |
| 8 | CEVA Ceva Inc | Technology | 70.0K | $3.30M | 2.92% | +70.0K | – | New | 0.25% |
| 9 | SEI Solaris Energy Infrastructure, Inc. | Industrials | 40.0K | $3.22M | 2.85% | -20.0K | -33.3% | Reduced | 0.05% |
| 10 | AMBA Ambarella Inc | Technology | 35.0K | $3.00M | 2.66% | +35.0K | – | New | 0.08% |
| 11 | FLEX Flex Ltd. | Technology | 10.0K | $1.62M | 1.44% | +10.0K | – | New | 0% |
| 12 | AXTI Axt Inc | Technology | 17.5K | $1.26M | 1.12% | -67.5K | -79.4% | Reduced | 0.03% |
| 13 | MTRN MATERION Corp | Basic Materials | 4,000 | $1.19M | 1.05% | -21.0K | -84.0% | Reduced | 0.02% |
| 14 | EOSE Eos Energy Enterprises, Inc. | Industrials | 200.0K | $1.18M | 1.04% | -526.0K | -72.5% | Reduced | 0.06% |
| 15 | KULR KULR Technology Group, Inc. | Industrials | 300.0K | $1.14M | 1.01% | 0 | 0.0% | Unchanged | 0.65% |
Tip. Select a row to see that position’s full history at Arosa Capital Management.
As of its Q2 2026 13F filing, Arosa Capital Management LP’s five largest positions were Vicor Corp (VICR) at 42.0%, Monolithic Power Systems, Inc. (MPWR) at 14.7%, Power Integrations Inc (POWI) at 9.3%, Qnity Electronics, Inc. (Q) at 7.2%, Williams Companies, Inc. (WMB) at 4.0% of the reported portfolio.
Arosa Capital Management LP reported a 13F portfolio worth $112.92M across 18 positions for Q2 2026. That is down 16.6% from the previous quarter.
Its largest purchases by value were Power Integrations Inc ($10.47M), Monolithic Power Systems, Inc. ($10.37M), Qnity Electronics, Inc. ($8.17M). It opened 6 new positions.
Its largest sales by value were Vicor Corp ($11.96M), Everus Construction Group, Inc. ($10.39M), MATERION Corp ($6.25M). It exited 30 positions entirely.
From the Form 13F-HR reports Arosa Capital Management LP files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.