High yield bonds are debt securities that have been rated below investment grade (rated BB+ or lower by Standard & Poor's or Ba1 or lower by Moody's). Because of their lower credit ratings, these bonds carry a greater risk of default compared to higher-rated bonds. To compensate investors for taking on this additional risk, issuers of high yield bonds offer higher interest rates. These bonds are typically issued by companies with weaker financial conditions or by private equity firms to finance acquisitions. Possible reasons for high yields include economic downturns affecting company performance, sector-specific struggles, or overall market conditions. Investing in high yield bonds can be attractive for investors seeking higher returns, but they also come with greater volatility and potential for loss.