Equity Research interview preparation
Sell side and buy side. Every question is either traced to a named firm from a public candidate report, or tagged at desk level when we could not trace it. Answers lead with the point, then the mechanism, then the limitation.
100 questions, mapped to the firms that asked them
- Questions
- 100
- Traced to a firm
- 72
- Firms
- 45
- Updated
- September 2026
069What is the difference between a mutual fund and an ETF?PIMCOCompliance · Los Angeles · 2024The Vanguard GroupGeneralist · Malvern · 2026
Say this
Both are pooled vehicles. A mutual fund transacts once a day at NAV directly with the fund; an ETF trades on an exchange all day at a market price, with authorised participants creating and redeeming units in kind.
Then walk it
- Trading: mutual fund orders all execute at the day's closing NAV. ETFs trade continuously, so you can buy intraday, use limit orders, and in some markets short them or trade options on them.
- The creation and redemption mechanism is the structural difference. Authorised participants exchange a basket of securities for ETF units, which keeps the market price close to NAV through arbitrage.
- Tax, in the US specifically: in-kind redemption lets an ETF hand out low-basis securities without realising gains, so ETFs generally distribute far fewer capital gains than mutual funds. This is a major driver of their growth.
- Costs: ETFs typically have lower expense ratios but you pay a bid-ask spread and possibly a brokerage commission, so for small regular investments a mutual fund can work out cheaper.
- Access and minimums: mutual funds often have minimum investments and support automatic contribution plans; ETFs need a brokerage account and trade in whole units unless fractional trading is offered.
- In India the same distinction holds, with the added practical point that ETF liquidity varies a lot outside the largest index products, so tracking difference and spreads matter more than the headline expense ratio.
Where candidates lose it
Saying only 'ETFs trade on an exchange'. The substantive differences are the creation-redemption mechanism and the tax consequence that follows from it. Both should be in the answer.
Expect next
- Why are ETFs more tax efficient?
- When would you recommend a mutual fund instead?
- What causes an ETF to trade away from NAV?
Reported by candidates at PIMCO (Compliance, Los Angeles, 2024); The Vanguard Group (Generalist, Malvern, 2026). 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.

