The logic of using the CYS, it seems, was that it would trend steadily upward in "normal" conditions when the yield spread was positive so that a mere tightening of the yield spread wouldn't drag the LEI down. But a year after the CYS was introduced, the yield curve inverted (see chart, bottom line). Now, what would that do to the cumulative spread? Let's take another example.
Say that by June 2006, the CYS had climbed to 560.20%. Now suppose the yield spread between 10-year Treasuries and the fed funds rate (which the Conference Board uses) fell in July to minus 0.15%. If so, the CYS would fall in July to 560.20% minus 0.15%, i.e., 560.05%. With the yield spread staying negative, it would drag the CYS down every month until, by March 2007, the CYS (see chart, top line) dropped to 555.57%. Thanks in part to Alan Greenspan's "conundrum" of long rates staying stubbornly low in the face of rising short rates, the CYS has become, at least for now, a downward-trending variable. So the yield curve acts as an extra drag on the LEI every month it stays inverted. If an inverted yield curve were still a good recession predictor, the LEI's weakness might be appropriate. But Mishkin, who co-authored that paper about yield curve inversions and recessions and is now a Fed governor, said at a private gathering that analysts could no longer rely on the relationship for predicting recession. In fact, excluding the CYS, LEI growth probably bottomed last summer at a reading well above those seen during the 1994-95 soft landing. So if it hadn't been for the distorting effect of the cumulative yield spread, LEI growth wouldn't look nearly recessionary. The LEI's decline this year is due almost entirely to weakness in its industrial components (which have a greater representation in the LEI than in the economy) plus a steady drag from an inverted yield spread. ECRI's Weekly Leading Index, which has a more balanced composition, presents a very different picture.| Weekly Leading Index, Growth Rate (%) |
![]() |
| Click here for larger image. |
| Source: Economic Cycle Research Institute |




