Here is the reason for the increase

At $III (-0,3 %) there would be news today on the sales of the first 4 weeks at Action.

https://de.marketscreener.com/boerse-nachrichten/3i-aktien-steigen-sprunghaft-nach-verbesserten-januar-umsaetzen-bei-hauptbeteiligung-action-ce7e5bdede8ef125