The Citigroup Economic Surprise Indicator is a quantitative measure of whether or not daily economic reports are exceeding economists’ expectations. Prior to most economic releases, dozens of economists are usually polled for their predictions. A median of those results is then calculated, which serves as the “consensus” view. If the actual result is higher, it’s considered to be a “positive” surprise, and vice versa. This indicator is designed so that it rises as positive surprises outpace negative surprises. In other words, economic momentum is building. On the other hand, when it’s declining, as it is now, economic data is falling short of expectations, indicating that economic momentum has stalled, and that the economy may soon weaken.
As shown on the chart below, the indicator bottomed last December, several months before equities, and soared higher into early June – clearly ahead of actual improvement in the economy. It then moved in a volatile, sideways fashion during the summer, but has recently rolled over and fallen back to where it was in March. This has certainly caught our attention, but since other economic measures and market-based technical indicators we follow are still holding up, we remain cautiously optimistic for now.