medium · Certified Financial Planner Psychology

A client named Chen is reviewing a bond portfolio and asks why the duration estimate for a 5% price drop was slightly inaccurate when interest rates rose by 1%.

Which principle of bond mathematics explains this discrepancy?

  1. Bond convexity causes duration to overstate price drops when rates rise.
  2. The reinvestment rate risk offset the price sensitivity of the bond.
  3. Bond convexity causes duration to understate price drops when rates rise.
  4. The bond's Macaulay duration is equal to its maturity, eliminating price volatility.

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