Growth Equity
Magnesium Capital
Magnesium Capital takes minority stakes in growing companies, usually without full control, from London, United Kingdom. It states a focus on energy & utilities, software & internet and industrials & manufacturing.
Stated investment criteria
What Magnesium Capital says it buys
Read from Magnesium Capital’s own website in August 2026. This is what the firm says it buys, not what anyone has recorded it buying, and figures are shown in the currency the firm itself used - nothing here is converted. Every line links to the page it was read from.
| Transaction types | Add-on, Growth1 |
A stated mandate is a firm’s description of itself and was true of the page on the day it was read; firms widen and narrow what they will look at without updating the site. Magnesium Capital states that it takes majority or outright ownership. Nothing here is a commitment by Magnesium Capital to consider any particular business, and nothing on this page is represented as being for sale.
SEC filings
What Magnesium Capital has raised
From this firm's own Form D filings. A fund files one within fifteen days of its first sale, under penalty of perjury, which makes these the hardest numbers on the page.
| Vehicles filed | 2 |
| Total capital raised | $238m |
| Largest single vehicle | $119m |
| Filing history | 2019 |
| Smallest accepted commitment | None stated |
| Filed from | LUXEMBOURG |
Form D covers US-domiciled vehicles raised from accredited investors. It will not capture a fund raised outside the United States, separately managed accounts, or capital deployed off balance sheet, so treat these as a floor rather than a total.
Regulatory record
How Magnesium Capital is registered
From Companies House, the United Kingdom's statutory company register.
| Companies House number | OC390349 |
| Incorporated | 2014-01-14 |
| Register status | Active |
| Officers on the register | 2 |
Portfolio
Disclosed holdings
Companies Magnesium Capital lists on its own website. 8 carry a stated investment year.
| Company | Invested | Years held | Recorded transaction |
|---|---|---|---|
| Limejump | 2016 | 10 | — |
| Stem Inc | 2018 | 8 | — |
| Cyberhawk | 2019 | 7 | — |
| Embriq | 2020 | 6 | — |
| Rope Partner | 2020 | 6 | — |
| Inopower | 2023 | 3 | — |
| Opoura | 2023 | 3 | — |
| ABEC | 2025 | 1 | — |
| FudliOnline Ordering Systems | — | — | — |
| Stem | — | — | — |
| Thecyberhawk | — | — | — |
Compiled from Magnesium Capital’s published portfolio page. Where a recorded transaction is shown, that company was the target of a reported deal and has most likely already been realised. Nothing here is represented as being for sale.
Valuation context
Transaction values in Energy & Utilities
What companies have actually sold for in energy & utilities, across 584 recorded transactions.
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