For these levels of risk, it's best to take on perfectly diversified corporate equity; however, the periodic negative beta is useful. (money.stackexchange.com)
Those with a beta of 0 tend to move independently of the market, while stocks with negative betas tend to zig when the market zags. (moneysense.ca)
For some reason, our backtest shows results which are roughly in line with the R2K (Russell 2000), but the MF results from the book present compelling upside returns during market downturns — so somehow the book results have negative beta during market blowouts? (greenbackd.com)