(Bloomberg) -- Buyout firm Advent International is nearing a deal to acquire a stake in Prometheus Group in a transaction that could value the industrial software company at more than $4 billion, including debt, according to people with knowledge of the matter.Most Read from BloombergHarvard Students Walk Out of Commencement Protesting SuspensionsNvidia Stock Surges as Sales Forecast Delivers on AI HopesStocks Join Bonds in Falling as Fed-Cut Bets Wane: Markets WrapIsrael to Restart Gaza Talks A