Volatility in commodity prices has revived interest in coordinated supply management, particularly amid rising concerns over food and energy security. An AMIS analysis reviews a century of international commodity agreements and concludes that while short-term coordination can help during crises, long-term price management has repeatedly failed. The paper offers important lessons for grain and feed markets navigating an increasingly fragmented global landscape.
Commodity price volatility has once again placed supply management at the center of policy debates. According to an analysis published by the Agricultural Market Information System (AMIS), a G20-established platform for improving transparency in global food markets, many current proposals for managing food, energy and metal markets resemble earlier international commodity agreements (ICAs), most of which delivered limited and temporary results.
The paper recalls that nearly 40 ICAs were established during the 20th century, covering products ranging from metals to agricultural commodities such as wheat, sugar and coffee. Post-war agreements typically involved both exporters and importers and aimed to influence prices through production quotas and stock management, often covering a significant share of global trade but a much smaller share of total production.
Wheat, the only AMIS commodity with direct experience under such agreements, illustrates these limits clearly. Early wheat agreements collapsed due to weak enforcement, bumper harvests and insufficient participation. Later frameworks gradually abandoned price stabilization in favor of cooperation, transparency and market information.
AMIS argues that markets tend to adjust faster than institutions. Higher prices encouraged by agreements often triggered new production, substitution and quota violations, ultimately undermining the schemes. Even OPEC, the most durable example, has faced repeated constraints from new supply sources and structural shifts in demand.
During acute crises, however, coordinated action can still play a stabilizing role. The COVID-19 period and the use of strategic grain reserves show that temporary measures can help manage shocks, provided they do not evolve into permanent price controls.
AMIS is an inter-agency platform aimed at strengthening market transparency and data sharing for key agricultural commodities such as wheat, maize, rice and soybeans.