Global Stocks

What is the global rice stocks ยป????????
someone can tell me what is the global rice stocks?
Without context, I'm just guessing. But this phrase is often used to describe all the rice stored anywhere in the world and is probably available for future consumption. For example, if you see a comment that "global rice stocks are falling, you probably do not correspond to stocks securities firms, but rather in their actions on the definition of "offer."
Global stocks sag on Greece jitters