Yields on the 10-year Treasury are up 50 basis points (bps, or 0.50%) since the U.S. presidential election on Nov. 8, 2016 and nearly 100 bps from the July lows, as bonds sold off. This marks the fastest rise since the so-called “taper tantrum” in 2013, when expectations of an increase in interest rates by the Federal Reserve triggered a bond selloff.
Whether the new administration’s policies lead to faster economic real growth (after inflation) is an open question. But they are almost certain to lead to faster nominal growth, which includes inflation. This is important because over the long term it is nominal growth that drives rates. Going back to 1962, nominal growth has explained roughly 35% of the variation in U.S. 10-year Treasury yields (see the accompanying chart). Roughly speaking, 10-year yields increase 50 bps for every one percentage point increase in nominal growth.