Arosa Capital Management LP
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Arosa Capital Management LP reported 19 stock positions worth $113.4 million. Its top holding was Vicor (VICR) at 41.8% of the portfolio, followed by Monolithic Power Systems (MPWR, 14.6%) and Power Integrations (POWI, 9.2%). Compared with Q1 2026, it opened 6 new positions, sold out of 33, added to 1 and reduced 11. The biggest buy was Monolithic Power Systems (MPWR, shares +167%) and the biggest sale an exit from Everus Construction (ECG).
- Most Recent 13F
- Q2 2026
- Location
- MIAMI BEACH, FL
- CIK
- 0001596053
- Portfolio Value
- $113.4M (Q2 2026)
- SEC Filing
- 0001596053-26-000004 ↗ filed Aug 14, 2026
Holdings Value
Holdings 19 stocks · $113.4M
| VICR Vicor Corp. | 41.85% | 125,000 | $47.5M | Reduce -20.1% |
| MPWR Monolithic Power Systems Inc. | 14.62% | 12,000 | $16.6M | Add +166.7% |
| POWI Power Integrations Inc. | 9.23% | 125,000 | $10.5M | New |
| Q Qnity Electronics Inc. | 7.20% | 50,000 | $8.2M | New |
| WMB Williams Cos Inc. | 3.93% | 60,000 | $4.5M | Reduce -20.0% |
| BW Babcock & Wilcox Enterpr | 3.42% | 275,000 | $3.9M | Reduce -52.2% |
| ROG Rogers Corp. | 3.18% | 22,000 | $3.6M | Reduce -49.6% |
| CEVA Ceva Inc. | 2.91% | 70,000 | $3.3M | New |
| SEI Solaris Energy Infrastructur | 2.84% | 40,000 | $3.2M | Reduce -33.3% |
| AMBA Ambarella Inc. | 2.65% | 35,000 | $3.0M | New |
| FLEX Flex Ltd. | 1.43% | 10,000 | $1.6M | New |
| AXTI Axt Inc. | 1.11% | 17,500 | $1.3M | Reduce -79.4% |
| MTRN Materion Corp. | 1.05% | 4,000 | $1.2M | Reduce -84.0% |
| EOSE Eos Energy Enterprises Inc. | 1.04% | 200,000 | $1.2M | Reduce -72.5% |
| KULR Kulr Technology Group Inc. | 1.01% | 300,000 | $1.1M | No change |
| NEOV Neovolta Inc. | 0.89% | 320,000 | $1.0M | New |
| AOSL Alpha & Omega Semiconductor | 0.63% | 15,000 | $710K | Reduce -50.0% |
| TGEN Tecogen Inc./Waltham Ma | 0.58% | 125,000 | $653K | Reduce -64.3% |
| GWH Ess Tech Inc. | 0.46% | 550,000 | $523K | Reduce -39.6% |
Options reported separately and not counted above: SPY puts ($59.7M), SMH puts ($45.9M), VICR calls ($41.8M), ENPH calls ($32.7M), IREN calls ($32.5M), QQQ puts ($22.1M), APLD calls ($20.1M), SHLS calls ($14.4M), CIFR calls ($13.5M), SMH calls ($13.1M), POWI calls ($12.6M), BE calls ($12.1M), and 18 more.
Other holdings (3): bonds, preferreds, convertibles and warrants · $1.2M (not counted above)
Total filed on the 13F, all lines: $114.6M.
Portfolio Sells Q1 2026 → Q2 2026
| ECG Everus Construction Group | Sold out | 0.00% | −6.83 |
| CCJ Cameco Corp. | Sold out | 0.00% | −4.66 |
| NXT Nextpower Inc. | Sold out | 0.00% | −3.96 |
| FSLR First Solar Inc. | Sold out | 0.00% | −3.96 |
| PWR Quanta Services Inc. | Sold out | 0.00% | −3.40 |
| MTZ Mastec Inc. | Sold out | 0.00% | −3.17 |
| STRL Sterling Infrastructure Inc. | Sold out | 0.00% | −2.14 |
| BW Babcock & Wilcox Enterpr | Reduce -52.2% | 3.42% | −2.14 |
| AXTI Axt Inc. | Reduce -79.4% | 1.11% | −2.07 |
| E Eni SPA-Sponsored ADR | Sold out | 0.00% | −2.05 |
| BE Bloom Energy Corp. Class A | Sold out | 0.00% | −1.93 |
| UUUU Energy Fuels Inc. | Sold out | 0.00% | −1.86 |
| ENPH Enphase Energy Inc. | Sold out | 0.00% | −1.75 |
| FPS Forgent Power Solutions Class A | Sold out | 0.00% | −1.64 |
| XLI SS Industrial Select Sector | Sold out | 0.00% | −1.63 |
| IREN Iren Ltd. | Sold out | 0.00% | −1.58 |
| LAC Lithium Americas Corp. | Sold out | 0.00% | −1.43 |
| EOSE Eos Energy Enterprises Inc. | Reduce -72.5% | 1.04% | −1.33 |
| MTRN Materion Corp. | Reduce -84.0% | 1.05% | −1.33 |
| MWH Solv Energy Inc. Class A | Sold out | 0.00% | −1.30 |
| TSSI TSS Inc. | Sold out | 0.00% | −1.28 |
| ATOM Atomera Inc. | Sold out | 0.00% | −1.23 |
| NVT Nvent Electric PLC | Sold out | 0.00% | −1.17 |
| OPTX Syntec Optics Holdings Inc. | Sold out | 0.00% | −1.16 |
| LGN Legence Corp. Class A | Sold out | 0.00% | −1.11 |
| VST Vistra Corp. | Sold out | 0.00% | −1.01 |
| BWXT BWX Technologies Inc. | Sold out | 0.00% | −0.67 |
| RDW Redwire Corp. | Sold out | 0.00% | −0.67 |
| USAR USA Rare Earth Inc. | Sold out | 0.00% | −0.65 |
| HUT Hut 8 Corp. | Sold out | 0.00% | −0.62 |
| ASPI Asp Isotopes Inc. | Sold out | 0.00% | −0.58 |
| CLSK Cleanspark Inc. | Sold out | 0.00% | −0.56 |
| AVAV Aerovironment Inc. | Sold out | 0.00% | −0.48 |
| KTOS Kratos Defense & Security | Sold out | 0.00% | −0.46 |
| ASTI Ascent Solar Technologies | Sold out | 0.00% | −0.39 |
| GWH Ess Tech Inc. | Reduce -39.6% | 0.46% | −0.24 |
| FEAM 5E Advanced Materials Inc. | Sold out | 0.00% | −0.18 |
| CORZ Core Scientific Inc. | Sold out | 0.00% | −0.11 |
| TGEN Tecogen Inc./Waltham Ma | Reduce -64.3% | 0.58% | −0.01 |
| ROG Rogers Corp. | Reduce -49.6% | 3.18% | +0.10 |
| AOSL Alpha & Omega Semiconductor | Reduce -50.0% | 0.63% | +0.19 |
| WMB Williams Cos Inc. | Reduce -20.0% | 3.93% | +0.34 |
| SEI Solaris Energy Infrastructur | Reduce -33.3% | 2.84% | +0.61 |
| VICR Vicor Corp. | Reduce -20.1% | 41.85% | +25.28 |
Portfolio Buys Q1 2026 → Q2 2026
Options Activity Q1 2026 → Q2 2026
| PWR Quanta Services Inc. | call | Sold out | 140,000 | $76.9Mbefore exit |
| SPY SS SPDR S&P 500 ETF Trust-US | put | Reduce -66.7% | 80,000 | $59.7M |
| SMH Vaneck Semiconductor ETF | put | New | 70,000 | $45.9M |
| VICR Vicor Corp. | call | Add +10.0% | 110,000 | $41.8M |
| ENPH Enphase Energy Inc. | call | Add +565.0% | 665,000 | $32.7M |
| IREN Iren Ltd. | call | Reduce -25.6% | 710,000 | $32.5M |
| XLI SS Industrial Select Sector | put | Sold out | 200,000 | $32.3Mbefore exit |
| MTZ Mastec Inc. | call | Sold out | 75,000 | $24.1Mbefore exit |
| QQQ Invesco QQQ Trust Series 1 | put | Reduce -81.3% | 30,000 | $22.1M |
| APLD Applied Digital Corp. | call | New | 540,000 | $20.1M |
| SHLS Shoals Technologies Group -A | call | Add +625.0% | 1,450,000 | $14.4M |
| CIFR Cipher Digital Inc. | call | Add +120.0% | 550,000 | $13.5M |
| SMH Vaneck Semiconductor ETF | call | Reduce -46.7% | 20,000 | $13.1M |
| POWI Power Integrations Inc. | call | New | 150,000 | $12.6M |
| BE Bloom Energy Corp. Class A | call | New | 40,000 | $12.1M |
| VICR Vicor Corp. | put | New | 30,000 | $11.4M |
| TAN Invesco Solar ETF | call | Sold out | 200,000 | $11.1Mbefore exit |
| MPWR Monolithic Power Systems Inc. | call | New | 8,000 | $11.1M |
| RUN Sunrun Inc. | call | New | 800,000 | $10.7M |
| ETN Eaton Corp. PLC | call | New | 25,000 | $10.7M |
| URA Global X Uranium ETF | call | Sold out | 200,000 | $9.7Mbefore exit |
| GEV GE Vernova Inc. | call | Sold out | 10,000 | $8.7Mbefore exit |
| NXPI NXP Semiconductors NV | call | New | 30,000 | $8.4M |
| NXT Nextpower Inc. | call | New | 70,000 | $8.3M |
| AXTI Axt Inc. | call | New | 100,000 | $7.2M |
| URA Global X Uranium ETF | put | New | 150,000 | $6.6M |
| TLN Talen Energy Corp. | call | Sold out | 20,000 | $6.4Mbefore exit |
| DVN Devon Energy Corp. | put | New | 150,000 | $6.2M |
| SEDG Solaredge Technologies Inc. | call | New | 100,000 | $5.8M |
| CEG Constellation Energy | call | Sold out | 20,000 | $5.6Mbefore exit |
| ALB Albemarle Corp. | call | New | 40,000 | $5.4M |
| RUN Sunrun Inc. | put | New | 400,000 | $5.4M |
| ICLN iShares Global Clean Energy | put | New | 250,000 | $5.1M |
| MTZ Mastec Inc. | put | New | 12,000 | $5.0M |
| PRIM Primoris Services Corp. | call | New | 50,000 | $5.0M |
| WULF Terawulf Inc. | call | Reduce -33.3% | 200,000 | $4.9M |
| FSLR First Solar Inc. | call | New | 20,000 | $4.7M |
| EXE Expand Energy Corp. | call | Sold out | 40,000 | $4.4Mbefore exit |
| HAL Halliburton Co. | put | New | 120,000 | $4.1M |
| CCJ Cameco Corp. | call | Sold out | 30,000 | $3.3Mbefore exit |
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
Notes & Other Activity Q1 2026 → Q2 2026
| NUCLW Eagle Nuclear Energy Corp. | *W EXP 02/25/203 | Reduce -48.0% | 390,375 | $566K |
Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 19 | $113.4M | VICR, MPWR, POWI, Q, WMB |
| Q1 2026 | 46 | $152.1M | VICR, ECG, BW, CCJ, NXT |
| Q4 2025 | 52 | $155.2M | VICR, ORA, BE, WMB, ETN |
| Q3 2025 | 41 | $61.6M | NXPI, CEG, RACE, CCJ, BWXT |
| Q2 2025 | 37 | $135.9M | CCJ, CTRI, IMSR, ECG, AMTM |
| Q1 2025 | 33 | $150.7M | GEV, CCJ, MIR, MTZ, FSLR |
| Q4 2024 | 31 | $150.2M | GEV, CCJ, PRIM, ETN, FSLR |
| Q3 2024 | 27 | $141.0M | GEV, NXT, CLNE, FSLR, CWEN |
| Q2 2024Amended | 28 | $128.2M | GEV, ENS, CLNE, PWR, CWEN |
| Q1 2024 | 31 | $147.1M | NVT, SHLS, CLNE, PWR, PRIM |