Key idea
Star ratings are a useful starting filter, but they look backward. Yesterday's five- star fund is not guaranteed to be tomorrow's.
Rating agencies award funds stars (often one to five) based largely on past risk- adjusted performance. A high rating is a reasonable starting filter, but it comes with a crucial limitation that catches many investors.
The core caveat
Ratings look backward. They summarise how a fund has done, not how it will do. A five-star fund can slip; a top performer of the last few years may simply have suited the recent market, not the next one.
How to use them well
Treat ratings as one input among several, a filter to shortlist, not a verdict. Combine them with the things you can examine directly: the fund's category fit for your goal, its expense ratio, its long-term consistency, and how it did in bad years, not just good ones. The famous line "past performance is not indicative of future returns" is a regulatory warning precisely because it is true.
Ratings help you narrow a long list, but they are a rear-view mirror. Use them to shortlist, then judge on cost, consistency, and fit. Chasing last year's top- rated fund is a common, costly habit.
Finished reading?
Marking this complete counts today, and your streak becomes day 1.