Volfefe index

In an attempt to quantify the impact of Trump’s tweets on the bond market, J.P. Morgan devised a “Volfefe Index” to analyze how the president’s tweets are influencing volatility in U.S. interest rates.

J.P. Morgan found that the index, named after Trump’s infamous and still mysterious “covfefe” tweet, explains a measurable fraction of the moves in implied rate volatility for 2-year and 5-year Treasurys.