￠Can betabe negative? and what does that mean?
—A stockwith negative beta moves in the opposite direction with the market portfolio.
—In adownturn, your stock will gain value and in an upturn, your stock will lose.
—Itprovides an insurance against recessions.
—However,it’s highly unlikely.
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—Question: Think about what kind of assets (not necessarily stocks) can provide such an insurance？


求解啊，谢谢了