With prices for cocoa having already risen 150% since 2008, makers of chocolate are up in arms over a British hedge fund manager’s recent buying spree of the valuable crop. Anthony Ward, head of the investment firm Armajaro, now controls the equivalent to 7% of the world’s annual cocoa production, which is enough to manipulate prices on commodities markets. Armajaro is active in the cocoa-growing nations of Côte d’Ivoire, Ghana, Indonesia, Nigeria and Ecuador.