Alpha, Beta & Management Style — Q&A
Questions
Q1. What does alpha measure?
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Whether a fund’s return was higher or lower than expected. Alpha = actual return − expected return.
Q2. A fund’s expected return was 14% and actual return was 17%. What is alpha?
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+3. The fund outperformed expectations by 3%.
Q3. If the S&P 500 rises 10%, what return would you expect from a fund with beta 1.5?
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Up 15% (10% × 1.5). Beta above 1.0 means more volatile than the market.
Q4. BCD fund has beta 1.0 and returned +14%. TUV fund has beta 1.5 and returned +19%. What is TUV’s alpha?
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−2. Market return = 14% (from beta-1.0 BCD). Expected TUV return = 1.5 × 14% = 21%. Alpha = 19% − 21% = −2 (underperformed by 2%).
Q5. What is the full risk-adjusted alpha formula?
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Alpha = (PR − RF) − [Beta × (MR − RF)], where PR = portfolio return, RF = risk-free return (commonly 3-month T-bill), MR = market return.
Q6. A small-cap fund returned 28% with beta 2.5. Russell 2000 was up 14%, S&P 500 up 10%, and the 3-month T-bill gained 2%. What is alpha?
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−4. Use Russell 2000 as MR (small-cap benchmark, not S&P 500). Alpha = (28%−2%) − [2.5×(14%−2%)] = 26% − 30% = −4.
Q7. What beta would you expect from a passive fund tracking the overall market?
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Near 1.0 — same volatility as the benchmark.
Q8. For actively vs. passively managed funds, how should alpha typically behave?
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Active managers aim to beat the benchmark, so alpha can be positive or negative. Passive funds designed to match benchmarks should have alpha near zero.
Q9. A fund has beta −2.0 and the market rises 10%. What is the expected portfolio return?
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Down 20% (10% × −2.0). Negative beta moves opposite the market.
Sources
| # | Source | Publisher |
|---|---|---|
| 1 | Achievable Series 65 — chapter 1.3.10 | Achievable (course text) |