The issuer's board of directors decides to cut its dividend

The real value of future cash flows is eroded by inflation

The bond's resale price changes due to movements in interest rates, if it is not held until maturity

The issuer's stock is delisted from the exchange

The exchange rate moves unfavorably for a foreign-currency investment

The issuer fails to make, in full or in part, its coupon payments and/or repayment of principal