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Coffee Economics with Karl: Why Coffee Prices Change

Karl Wienhold

In a previous episode, Coffee Economics with Karl explored the basic concepts of supply and demand, and price theory — i.e., the notion that supply and demand determine price.

The newest episode, led by Karl Wienhold of Colombian green coffee trader Cedro Alto, delves further into these concepts, exploring the fundamentals of why coffee prices change. Here’s more from Karl:

Have you ever wondered why, really, the coffee price changes? Last week we learned how supply and demand come together to determine the price of coffee (or of anything). This week we look at how shifts in supply and/or demand cause upward and downward pressure on price.

This is also a very basic and simplified explanation of an incredibly complex and nuanced subject, but needed as a foundation for further discussion. Understanding these relationships will allow us to evaluate events and potential events and understand how they are or would affect supply and/or demand and, subsequently, the spot price of coffee.

At the moment of this writing, the ICE base price for arabica for December futures contracts — a.k.a., the “C price” — was exactly $1.0700 per pound. According to Karl, it’s important to note that prices such as this are not set by some mad puppeteer.

“These changes in price are cold, robotic movements caused by the aggregate of millions of personal decisions going on every day. There is no Wizard of Oz behind the coffee price determining what the price is going to be one day or another,” Wienhold says in the video. “These are the natural forces that we have to understand and respect as we try to make real changes in how coffee is traded. If we ignore supply and demand, and the way equilibrium price is determined, we’re bound to fail.”

The full Coffee Economics with Karl playlist is available here. And here’s the latest:



Humberto Cardona

Muy “pobre” este artículo. No da ninguna luz sobre las causas del establecimiento de precios del café. Solo especula.!!!

Yves Tombeur

Great dynamics are taking place in the world of coffee trading. Old patterns such as the “sacro-saint” NY”C” are damn obsolete. A new dynamic is taking place that might give growers to finally be respected for all their sweating and dedication. All this looks very promising!


Señor Humberto,
Con todo el respeto, no se trata de las causas del establecimiento del precio porque ese no es el asunto del video. La intención es mostrar cómo y porqué cambios de oferta y demanda resultan en cambios de precio. ¿Cuáles son los eventos que podrían causar fluctuaciones de oferta y/o demanda? Ese es otro tema totalmente. Pero gracias por su amable queja…

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