This paper calls for integrating price-setting power and related uneven exposure to price risks into the analysis of governance in global value chains (GVCs) as it adds to other power dimensions in producing unequal distributional outcomes. This is shown for the cocoa GVC, in which—unlike in today’s mostly liberalised market structures—the world’s top cocoa-producing countries, Côte d’Ivoire and Ghana, pursue price stabilisation measures. These measures address intra-seasonal producer price volatility, and recent collaboration has achieved a living-income differential on top of export prices, but such measures do not shield export and producer prices from inter-seasonal variations in world prices determined on commodity derivatives markets. Based on interviews with actors along the cocoa GVC, we argue that this is related to the price-setting power of ‘grinder-traders’ and the key role of financial hedging and trading on commodity derivatives markets in their business strategies.