HaloSource, a US-based company for water purification, issues $50m of new shares at its London Stock Exchange initial public offering and existing shareholders sell $30m of stock.

US-based venture capital firm CD Ventures provides further $2m for Germany-based Noxxon Pharma.

UCB drugs company invests $20m and signs licensing agreement worth up to $725m with Synosia Therapeutics.

Naspers and Tencent-backed Mail.ru could be worth up to $5bn at its London listing.

Christie, a global maker of projection equipment, joins as a new investor in Light Blue Optics.

3M's New Ventures business invests an undisclosed amount in Printechnologics as both companies develop electronic circuitry on paper or foil.

Europe's largest venture round of the year doubles to more than $150m the amount raised by Immatics Biotechnologies since its launch.

Gedeon Richter will pay up to SFr445m ($462.8m) for PregLem, a biopharmaceutical company focused on the treatment of gynaecological conditions and infertility.