Portfolio Management interview preparation

Questions

100

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40

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24

Updated

September 2026

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Topic

All topicsPortfolio theory5Factor models8Asset allocation11Rebalancing3Portfolio construction7Benchmarks and tracking error5Performance measurement8Risk management6Fixed income and LDI5Currency and global3Implementation and costs5Active versus passive6India markets7Brainteasers5Career and fit16

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1. 002Draw me the efficient frontier and tell me what every part of that picture means.Portfolio theoryCorephone / first roundAsset managementMulti-asset

   Say this

   Volatility on the x axis, expected return on the y axis. The cloud of possible portfolios has an upper-left edge, and that edge is the frontier. Anything below it is dominated, because you can get the same return for less risk.

   Then walk it

   1. Plot every combination of your assets. The set is bounded on the left by the minimum variance portfolio, which is the leftmost point on the curve.
   2. The efficient frontier is only the part above that point. Below the minimum variance portfolio the curve bends back, and those portfolios are strictly worse, more risk for less return.
   3. Add a risk-free asset and you get a straight line from the risk-free rate that is tangent to the frontier. That is the capital allocation line, and the tangency point is the maximum Sharpe ratio portfolio.
   4. That is the important bit, because it says everyone should hold the same risky portfolio and simply vary how much cash or leverage they put against it. Risk appetite changes the position on the line, not the mix.
   5. The frontier moves out when you add a genuinely new asset class with low correlation, which is the real argument for adding alternatives, and it moves in when you add constraints.
   6. The caveat I would say unprompted: the frontier is drawn from estimates. Redraw it with five years of different data and the shape moves a lot, so nobody trades the tangency point literally.

   Where candidates lose it

   Drawing the whole ellipse and calling all of it the frontier. Only the upper branch, above the minimum variance portfolio, is efficient. Also, get the axes the right way round: volatility is horizontal, return is vertical.

   Expect next

   • Where does a 60/40 portfolio sit on that picture?
   • What moves the frontier outward?
   • Why does everyone not just hold the tangency portfolio?

Firm tags come from public, anonymous candidate reports on Wall Street Oasis: strong signal, not sworn testimony. Firms are named as the places a question was reported, not as partners of Fin Maverick. Answers are written for this page to show how to think out loud; they are not scripts to recite.