More than 40 inverse exchange-traded funds run by Rydex Investments and ProFunds are passing on sizable capital gains to investors. For those who hold those funds in taxable accounts, the taxes they will owe will range from 50% to even as high as 80% of assets, The Wall Street Journal reports.

Large investors, who are able to redeem ETF shares for underlying stock holdings rather than cash, are typically able to avoid capital gains.

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