Portfolio Management interview preparation

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100

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24

Updated

September 2026

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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. 015A new institutional client hands you a mandate. How do you set the strategic asset allocation?Asset allocationIntermediatecase studyVanguardInvestment Research · Malvern · 2024

   Say this

   Start from the obligation, not the assets. What has to be paid, when, in what currency, and what shortfall is intolerable. Then build capital market assumptions, then solve for the cheapest mix that meets the obligation with acceptable risk, then write down the rules.

   Then walk it

   1. Define the objective precisely. A pension has a liability with a duration and an inflation linkage. An insurer has regulatory capital. An endowment has a spending rule. Each of those implies a different portfolio even at the same risk tolerance.
   2. Separate risk capacity from risk tolerance. Capacity is what the balance sheet or the funding position can absorb; tolerance is what the trustees will actually sit through. Build to the lower of the two, because a policy abandoned in a drawdown is worse than a more modest one that survives.
   3. Set capital market assumptions for each asset class: expected return, volatility, correlation. I would build expected returns from building blocks, real yields plus inflation for bonds, earnings yield plus growth for equities, rather than extrapolating history, because historical equity returns include a valuation re-rating that cannot repeat.
   4. Then optimise, but with a heavy hand on the inputs. Constrain sensible ranges, use resampling or shrinkage, and test the candidate mixes against the objective in a scenario framework rather than trusting one frontier.
   5. Then stress it. What does a 1970s inflation path, a 2008 correlation shock, or a decade of 2 percent real yields do to the funding position? A policy chosen on a single expected return path is untested.
   6. Then write the governance: target weights and ranges, the rebalancing rule, hedging policy for currency, liquidity budget, and review triggers. The document is the deliverable, because it is what stops the committee changing course at the worst moment.

   Where candidates lose it

   Going straight to weights, '60 percent equities, 40 percent bonds, done'. The sequence is objective, then capacity and tolerance, then capital market assumptions, then mix, then stress, then written policy. Also do not extrapolate historical equity returns as your expected return input; build it up from yield and growth and say so.

   Expect next

   • How would you build a long-run expected return for equities?
   • How does the answer change for a closed pension scheme?
   • What ranges would you set around the targets?

   Reported by candidates at Vanguard (Investment Research, Malvern, 2024). Source: Wall Street Oasis.

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.