So called high yield funds are the best ones to look for, since they provide you with the opportunity to enjoy the highest possible yield you can. (moneywisepastor.com)
Performance for class B, C, M, R, and Y shares prior to their inception is derived from the historical performance of class A shares, adjusted for the applicable sales charge (or CDSC) and, except for class Y shares, the higher operating expenses for such shares (with the exception of Putnam Tax - Free High Yield Fund and Putnam AMT - Free Municipal Fund, which are based on the historical performance of class B shares). (putnam.com)
Insights from the defensively - minded, high yield fixed income team of Buffalo High Yield Fund portfolio managers (buffalofunds.com)