FRM Part I · FRM Exam Part I · Measuring Return, Volatility, and Correlation
A portfolio manager records daily log returns for five consecutive days of 1.20%, -0.50%, 0.80%, -1.10% and 0.40%. The initial value is EUR 2,000,000. What is the approximate ending value after the five days?
Log returns are additive across time, so the five-day total is 0.80%. Multiplying EUR 2,000,000 by e^0.008 gives about EUR 2,016,000, so the closest answer is EUR 2,015,000. Averaging or ignoring the sum would give the wrong value.
- AEUR 2,015,000Correct
- BEUR 2,000,000
- CEUR 2,030,200
- DEUR 2,010,000
Explanation
Log returns add: 1.20 - 0.50 + 0.80 - 1.10 + 0.40 = 0.80%. Ending value = 2,000,000 x e^0.008 = 2,016,064, which is closest to 2,015,000 among the options. EUR 2,010,000 would need about a 0.5% return, and the others are not consistent with the 0.8% total.
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