Proponents of this index believe that it captures a wide dispersion of information and can help forecast shifts in the economy. After rapidly plunging into negative territory in the wake of the spread of COVID-19 around the globe, this index took roughly a year to rebound to a positive reading—and actually surged to a multidecade high in 2021, reflecting the economic reopening.
Over the past several months, it has begun to recede from those peak levels, but has been strongly positive and near historically high levels.