And it turns out that they all do worse than one simple forecast: the current oil price. That’s right: the most accurate forecast of oil prices over the next month, year, or quarter is the current oil price. We call this the no-change forecast.

The Alquist-Kilian finding was the subject of my latest commentary for NPR’s Marketplace (available here; or here for the audio version). Here’s the highlight:

Amazingly, this simple rule did better than the average of dozens of professional forecasters! In fact, the no-change forecast was 34 percent more accurate at predicting oil prices in 3 months time, and 18 percent more accurate at predicting prices in a year’s time. While professional prognosticators might argue that this difference isn’t statistically significant, it sure is embarrassing.null