Container shipping rates have increased for a third week, and the Shanghai Shipping Exchange’s CCF Index climbed back above 800 points last week for the first time since February. This sets a positive backdrop for the forthcoming earnings reports of the shippers, but may be due to uncertainty not optimism. The fastest growth has been seen in South America-bound rates, which jumped 19% since the end of March. That may be due to a lack of clarity about future counterparties after the European Commission and Brazilian authorities required Maersk to reduce its market share as part of their a...