Biggest Private Companies by Valuation
This is a list of the biggest private companies by valuation. It includes companies with valuations available on secondary markets based on completed funding rounds in the last 3 years.
Companies
452
In our database
Total Valuation
$5.8T
Latest round
Total Revenue
$392.1B
Latest estimates
3 Companies
| Rank | |||||||
|---|---|---|---|---|---|---|---|
| 123 | ![]() Valar Atomics | $6B | n/a | +19.06% | United States | ||
| 243 | ![]() Antares Nuclear | $2.06B | n/a | – | – | United States | |
| 263 | ![]() Radiant | $1.81B | n/a | +21.53% | United States |


