With the greenshoe in its initial public offering fully exercised by June 15, former Wacker-Chemie subsidiary Siltronic is now to 42.2% in free float.  Total proceeds from the placement of 12.7 million shares, including the overallotment, exceeded €379 million.

Siltronic, the world's third-biggest maker of silicon wafers for semiconductor chips, behind Japanese rivals Shin-Etsu Handotai and Sumco, cashed in €150 million from the share sale, with Wacker receiving €230 million.

Debuting at €30 per share, the electronics company was trading at €33.755 on Jun. 16.