Stock Market · Mutual funds, deeper

Fund star ratings

Morningstar, Value Research, and other rating agencies assign star ratings (1-5) to mutual funds. Most investors pick 5-star funds without understanding what the rating actually measures.

What star ratings measure

Star ratings are based on PAST risk-adjusted returns relative to peers. A 5-star fund has been in the top 10% of its category over the rating window (usually 3 or 5 years).

> Key word: PAST. Star ratings reward what already happened. They have weak predictive power for future performance.

The 5-star trap

Multiple studies have shown:

• 5-star funds, on average, do NOT outperform 3-star funds over the next 5 years
• Funds that earned 5 stars often did so during favourable market conditions for their style
• When the market regime changes, today's 5-star fund becomes tomorrow's 2-star fund

Example

Small cap funds were 5-star darlings in 2017. After the 2018-2019 small cap correction, many fell to 2-3 stars. Investors who bought at 5-star peak experienced years of underperformance.

Better signals than star ratings

1. Expense ratio (low is good)

2. Consistency of rolling returns across multiple periods

3. Fund manager tenure (stability)

4. AUM trajectory (massive AUM growth often hurts mid/small cap funds)

5. Investment style consistency over multiple market cycles

When star ratings can help

• As a starting filter (eliminate the bottom-tier funds)
• For broad category comparison (large cap vs mid cap)
• For very long track records (10+ years, 5-star throughout)

Recency bias warning

When you're picking a fund, all the funds that LOOK BEST are the ones that recently performed best. By the time you spot them, you're often near the top of their cycle. Don't chase recent star ratings.

Takeaway. Star ratings measure past risk-adjusted returns, not future performance. 5-star funds don't consistently beat 3-star funds going forward. Use ratings as one filter, not the primary decision driver. Expense ratio and rolling consistency matter more.