Arosa Capital Management LP holds a focused book of 49 stocks worth $153.6M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened BABCOCK & WILCOX ENTERPRISES and trimmed WILLIAMS COS INC. Their largest long position is VICOR CORP at 16% of the equity book. They also disclosed $280.8M in put options (a bearish bet) and $226.0M in call options (bullish), shown separately below and excluded from the equity book.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1596053/holdings"
Use Arkolith to show Arosa Capital Management LP's latest holdings, largest changes, and filing provenance.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
14% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Vicor Corp COM | $25.2M | 156.5K | 16.4% | ▲+16% Added · +22K sh | |
| 2 | Everus Constr Group COM | $10.4M | 88.0K | 6.8% | ▲+120% Added · +48K sh | |
| 3 | Babcock & Wilcox Enterprises COM | $8.4M | 575.0K | 5.5% | ▲New New position | |
| 4 | Cameco Corp COM | $7.1M | 65.2K | 4.6% | ▲+30% Added · +15K sh | |
| 5 | Nextpower Inc CLASS A COM | $6.0M | 50.0K | 3.9% | ▲+131% Added · +28K sh | |
| 6 | First Solar Inc COM | $6.0M | 30.5K | 3.9% | ▲+391% Added · +24K sh | |
| 7 | Williams Cos Inc COM | $5.5M | 75.0K | 3.6% | ▼−32% Reduced · −35K sh | |
| 8 | Quanta Svcs Inc COM | $5.2M | 9.4K | 3.4% | ▲+21% Added · +2K sh | |
| 9 | Monolithic PWR Sys Inc COM | $4.9M | 4.5K | 3.2% | ▲New New position | |
| 10 | Axt Inc COM | $4.8M | 85.0K | 3.2% | ▲+6.3% Added · +5K sh | |
| 11 | Mastec Inc COM | $4.8M | 15.0K | 3.1% | —Held | |
| 12 | Rogers Corp COM | $4.7M | 43.6K | 3.0% | ▲New New position | |
| 13 | Materion Corp COM | $3.6M | 25.0K | 2.4% | ▲New New position | |
| 14 | Eos Energy Enterprises Inc COM CL A | $3.6M | 726.0K | 2.3% | ▲+149% Added · +434K sh | |
| 15 | Solaris Energy Infras Inc COM CL A | $3.4M | 60.0K | 2.2% | ▲New New position | |
| 16 | Sterling Infrastructure Inc COM | $3.3M | 8.0K | 2.1% | ▲+100% Added · +4K sh | |
| 17 | Eni SPA SPONSORED ADR | $3.1M | 55.0K | 2.0% | ▼−50% Reduced · −55K sh | |
| 18 | Bloom Energy Corp COM CL A | $2.9M | 21.7K | 1.9% | ▼−75% Reduced · −67K sh | |
| 19 | Energy Fuels Inc COM NEW | $2.8M | 155.0K | 1.8% | ▲New New position | |
| 20 | Enphase Energy Inc COM | $2.7M | 70.4K | 1.7% | ▲+249% Added · +50K sh | |
| 21 | Forgent Power Solutions Inc COM SHS CL A | $2.5M | 85.0K | 1.6% | ▲New New position | |
| 22 | Select Sector SPDR TR STATE STREET IND | $2.5M | 15.4K | 1.6% | ▲Added Added · +15K sh | |
| 23 | Iren Limited ORDINARY SHARES | $2.4M | 70.0K | 1.6% | ▼−23% Reduced · −21K sh | |
| 24 | Lithium Amers Corp New COM SHS | $2.2M | 550.0K | 1.4% | ▲New New position | |
| 25 | Solv Energy Inc COM SHS CL A | $2.0M | 65.7K | 1.3% | ▲New New position | |
| 26 | TSS Inc Del COM | $2.0M | 150.0K | 1.3% | ▼−25% Reduced · −50K sh | |
| 27 | Atomera Inc COM | $1.9M | 490.0K | 1.2% | ▲New New position | |
| 28 | Nvent Elec PLC SHS | $1.8M | 15.0K | 1.2% | ▼−46% Reduced · −13K sh | |
| 29 | Syntec Optics Hldgs Inc CL A | $1.8M | 250.0K | 1.1% | —Held | |
| 30 | Legence Corp CL A | $1.7M | 30.0K | 1.1% | ▼−25% Reduced · −10K sh | |
| 31 | Vistra Corp COM | $1.5M | 10.2K | 1.0% | ▲Added Added · +10K sh | |
| 32 | Ess Tech Inc COM NEW | $1.1M | 910.0K | 0.7% | ▼−4.2% Reduced · −40K sh | |
| 33 | Eagle Nuclear Energy Corp *W EXP 02/25/203 | $1.0M | 750.0K | 0.7% | ▲New New position | |
| 34 | BWX Technologies Inc COM | $1.0M | 5.0K | 0.7% | ▼−75% Reduced · −15K sh | |
| 35 | Redwire Corporation COM | $1.0M | 120.0K | 0.7% | ▲New New position | |
| 36 | USA Rare Earth Inc COM | $984K | 65.0K | 0.6% | ▲New New position | |
| 37 | Hut 8 Corp COM | $938K | 20.0K | 0.6% | ▼−76% Reduced · −65K sh | |
| 38 | Tecogen Inc New COM NEW | $896K | 350.0K | 0.6% | —Held | |
| 39 | Asp Isotopes Inc COM | $884K | 200.0K | 0.6% | —Held | |
| 40 | Cleanspark Inc COM NEW | $851K | 100.0K | 0.6% | ▲Added Added · +100K sh | |
| 41 | Aerovironment Inc COM | $732K | 4.0K | 0.5% | ▲New New position | |
| 42 | Kulr Technology Group Inc COM | $711K | 300.0K | 0.5% | —Held | |
| 43 | Kratos Defense & Sec Solutio COM NEW | $705K | 10.0K | 0.5% | ▲New New position | |
| 44 | Alpha & Omega Semiconductor SHS | $665K | 30.0K | 0.4% | —Held | |
| 45 | Ascent Solar Technologies In COM NEW | $591K | 150.0K | 0.4% | ▲New New position | |
| 46 | Terrestrial Energy Inc *W EXP 10/28/203 | $453K | 175.0K | 0.3% | ▼−36% Reduced · −100K sh | |
| 47 | 5E Advanced Materials Inc COM NEW | $280K | 200.0K | 0.2% | ▲New New position | |
| 48 | Core Scientific Inc New COM | $164K | 11.0K | 0.1% | ▲Added Added · +11K sh | |
| 49 | Net Power Inc *W EXP 06/08/202 | $29K | 106.2K | 0.0% | —Held |
Put / call positions from the 13F — totals include every disclosed option leg
| Type | Underlying | Notional value | Underlying shares |
|---|---|---|---|
| PUT · bearish | SS SPDR S&P 500 ETF TRUST-USSPY | $156.1M | 240K |
| PUT · bearish | INVESCO QQQ TR | $92.3M | 160K |
| CALL · bullish | QUANTA SERVICES INCPWR | $76.9M | 140K |
| CALL · bullish | IREN LIMITED | $32.7M | 955K |
| PUT · bearish | SELECT SECTOR SPDR TR | $32.3M | 200K |
| CALL · bullish | MASTEC INCMTZ | $24.1M | 75K |
| CALL · bullish | VICOR CORP | $16.1M | 100K |
| CALL · bullish | VANECK SEMICONDUCTOR ETFSMH | $14.4M | 38K |
| CALL · bullish | INVESCO EXCH TRADED FD TR II | $11.1M | 200K |
| CALL · bullish | GLOBAL X FDS | $9.7M | 200K |
| CALL · bullish | GE VERNOVA INC | $8.7M | 10K |
| CALL · bullish | TALEN ENERGY CORP | $6.4M | 20K |
| CALL · bullish | CONSTELLATION ENERGY CORP | $5.6M | 20K |
| CALL · bullish | EXPAND ENERGY CORPORATION | $4.4M | 40K |
| CALL · bullish | TERAWULF INC | $4.3M | 300K |
| CALL · bullish | ENPHASE ENERGY INC | $3.8M | 100K |
| CALL · bullish | CAMECO CORP | $3.3M | 30K |
| CALL · bullish | CIPHER DIGITAL INC | $3.2M | 250K |
| CALL · bullish | SHOALS TECHNOLOGIES GROUP IN | $1.3M | 200K |
13F filers disclose option positions at the market value of the underlying the contracts reference, not the premium paid. A put is a bearish bet (it gains if the stock falls); a call is bullish. “Underlying shares” is the share count the contracts control, not a share holding. These legs are excluded from the equity book, weighting, concentration and sector figures above.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 15, 2026 | 68 | $660.4M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 17, 2026 | 83 | $795.5M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 14, 2025 | 70 | $455.4M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 14, 2025 | 60 | $531.1M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 15, 2025 | 43 | $270.7M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 14, 2025 | 42 | $249.2M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 14, 2024 | 37 | $258.1M | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Oct 15, 2024 | 33 | $177.3M | 13F-HR/A |
| Q1 2024 | Mar 31, 2024 | May 15, 2024 | 35 | $169.4M | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 14, 2024 | 29 | $222.1M | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 14, 2023 | 47 | $321.8M | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 14, 2023 | 45 | $395.1M | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 15, 2023 | 60 | $638.7M | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 14, 2023 | 55 | $471.5M | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 14, 2022 | 56 | $467.3M | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 15, 2022 | 63 | $617.1M | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 16, 2022 | 63 | $584.5M | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 14, 2022 | 57 | $405.3M | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Nov 12, 2021 | 70 | $539.0M | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Aug 16, 2021 | 63 | $494.7M | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 17, 2021 | 65 | $541.1M | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 12, 2021 | 73 | $729.2M | 13F-HR |
| Q3 2020 | Sep 30, 2020 | Nov 13, 2020 | 65 | $647.2M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.