Long/short equity: Answer Guide 2027
Long/short equity is a hedge fund strategy that buys undervalued stocks (longs) while selling overvalued stocks short — profiting from stock selection on both sides while hedging out broad market exposure. In a long short interview, explain the mechanics, the net exposure concept, and where the returns actually come from.
Long Short Interview Questions: What They Test
The core concept is net versus gross exposure. A fund that is 120% long and 70% short has 50% net exposure (its directional market bet) and 190% gross exposure (its total leverage and activity level). Interviewers want you to compute and interpret both instantly.
The return logic: longs should outperform shorts on a relative basis — the fund makes money if its longs fall less than its shorts in a downturn, or rise more in an upturn. Common variants include the short rebate (interest earned on short-sale cash proceeds) and pair trades that isolate a specific view, like going long one automaker and short another to bet on relative execution.
How to Answer a Long Short Interview Question
- Define it. "Buy what you think is cheap, short what you think is expensive — returns come from selection, not market direction."
- Explain net vs gross. "Net exposure is longs minus shorts — the market bet; gross is longs plus shorts — the leverage."
- Walk the payoff. "If longs rise 10% and shorts rise 4%, the fund gains roughly the 6% spread, whatever the market did."
- Mention the short rebate. "Short proceeds earn interest, which subsidizes the strategy's carry cost."
Common Mistakes in Long Short Interview Answers
- Confusing net and gross exposure. This is the number-one trip-up — drill the arithmetic until it is automatic.
- Thinking shorts profit only in downturns. In a rising market, shorts that rise less than longs still contribute positively on a relative basis.
- Ignoring borrow costs. Hard-to-borrow shorts carry steep fees that can erase the thesis — always mention borrow availability.
Long/short is the most commonly referenced hedge fund strategy in interviews, so the exposure math should be reflexive.
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FAQ
Q: What is net exposure in long/short equity? A: Long positions minus short positions as a percentage of capital — it measures the fund's directional bet on the market.
Q: What is gross exposure? A: Long positions plus short positions — it measures total leverage and trading activity regardless of direction.
Q: How do short sellers make money in a rising market? A: On a relative basis: if longs outperform shorts, the spread is positive even when everything rises in absolute terms.
Q: What is the short rebate? A: Interest earned on the cash proceeds from short sales, which partially offsets borrowing costs and funds the strategy's carry.
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