The stock to use ratio indicates the level of carryover stock for any given commodity as a percentage of the total use of the commodity. The stocks-to-use ratio is technically an indicator of supply relative to demand in quantity terms. So when the stock to use ratio goes down, prices go up. Let's illustrate this with some graphs. The CME regularly reports the latest stock to use ratios here . For example, corn STU ratios can be found here . Corn prices can be found in the chart below: When analyzing both charts, we see that when the STU ratio went down in 2010-2011, we saw a price spike in corn a few years later (2011-2012). Then the STU ratio went up in 2013-2014 and consequently we saw a drop in corn prices in 2014-2015. As the STU ratio is topping off again in 2016, I expect to see a rise in corn prices very soon. The rise in corn prices is also supported by the rough weather in Brazil. Let's look at wheat . The wheat STU ratio has ween going up since 2006, so it's cle...