Stock Market Risk-Taking Is Going Parabolic

 | Apr 14, 2021 12:59AM ET

The “beta” for long/short equity hedge funds has more than tripled vs the average beta since at least December 2018. Beta is the most common measure of stock or portfolio volatility relative to a broad equity index. Technically, beta is the percentage change in a stock (or fund) for every one percent change in the index.  A stock/fund with a beta of 1 tends to move in percentage correlation with the index. A beta of 2 means a stock/fund moves 2% for a 1% move—up or down—in the index.