Shipping giant AP Moeller - Maersk A/S announced that Chief Executive Officer Soren Skou is to step down at the end of the year causing its Class B stock to fall 2.4% by mid-morning in Europe on Monday. Skou will be succeeded in January by Chief Financial Officer Vincent Clerc, a company insider of 25 years standing. Clerc takes the helm of the shipping giant at an awkward moment for ...