Long Short Equity Strategy: Profit From Both Sides

Key Takeaways

• Long short equity strategy maintains simultaneous long and short stock books to profit from both rising winners and falling losers.
• A 150/50 book runs 150% long and 50% short, giving 100% net exposure and 200% gross exposure to amplify stock-selection skill.
• Confusing long/short with market neutral is the most common error, most funds retain meaningful net long exposure and lose in bear markets.
• Long/short equity belongs in a portfolio as a way to reduce pure market beta while maintaining access to equity-like return potential.

What It Is

A long/short equity manager builds two books: a long book of names they believe are undervalued or have positive catalysts, and a short book of names they believe are overvalued or have deteriorating fundamentals. The manager keeps both books open simultaneously and expects to earn a return from the spread between them.

Unlike a market-neutral fund, long/short equity typically maintains a net long bias. A common profile is 150/50: 150 percent of capital in long positions, 50 percent in shorts, producing a net market exposure of 100 percent and a gross exposure of 200 percent. Other managers run lower net, closer to 30 to 60 percent, depending on their views and risk appetite.

The Intuition

A long-only fund is hostage to the market. When the S&P 500 falls 20 percent, even the best long-only stock pickers usually lose money in absolute terms. Shorting lets a manager act on negative views, dampen drawdowns during bear markets, and generate returns from mistakes on both sides of the ledger.

The second benefit is capital efficiency. Cash raised from short sales can fund additional long positions, letting a 100 percent capital base support 150 percent long exposure. That gearing amplifies stock-selection skill, for better or worse.

How It Works

Three decisions define a long/short equity portfolio.

1. Net exposure. Net equals longs minus shorts. A fund running 130 percent long and 30 percent short has net exposure of 100 percent, similar to an unlevered long-only fund. A fund running 100 long and 80 short has net exposure of 20 percent, closer to market neutral.
2. Gross exposure. Gross equals longs plus shorts. Higher gross means more of the return comes from relative stock selection rather than market direction. A 150/50 fund has 200 percent gross exposure; a 100/100 market-neutral fund has 200 percent gross at zero net.
3. Factor tilts. Even at a given net and gross, the portfolio can be long cheap stocks and short expensive ones (value tilt), long high-momentum and short low-momentum (momentum tilt), or any other combination. These tilts drive the factor profile and often explain most of the returns.

Managers typically earn a short rebate on the cash collateral held at the prime broker against their shorts, roughly the general-collateral rate minus a spread. On hard-to-borrow names the rebate turns negative and the short costs money to maintain.

Worked Example

A fund has 100 million in capital and runs 150/50. The manager allocates 150 million long across 40 names and 50 million short across 25 names. Over a year, the long book returns 15 percent and the short book falls 5 percent (meaning the shorts worked).

Gross return on the longs: 150 million times 15 percent = 22.5 million. Gross return on the shorts: 50 million times negative 5 percent of the underlying, but because the fund is short, a decline is positive, so plus 2.5 million. Total gross return: 25 million, or 25 percent on 100 million of capital.

If the S&P 500 returned 8 percent that year, the fund generated roughly 17 percent of alpha, though some of that came from the extra long exposure beyond 100 percent rather than pure stock selection.

Common Mistakes

1. Confusing long/short with market neutral. They are not the same. Most long/short equity funds have a meaningful net long bias. They lose money in bear markets, just less than a long-only fund. True zero-beta portfolios are the market-neutral subset of this family.

2. Ignoring short-squeeze risk. A short position has unlimited loss potential. Crowded shorts can spike 50 percent or more on a catalyst, a meme-stock rally, or forced buying. Size shorts conservatively and diversify across many names.

3. Benchmarking against the wrong index. A 150/50 fund with 100 percent net exposure should be compared to the S&P 500. A 30 percent net fund should not. Using the S&P as the yardstick for a low-net book will flatter the manager in bull markets and punish them in bear markets unfairly.

4. Underestimating fees. Typical long/short fees are 1.5 percent management plus 20 percent performance. After fees, CFA Institute research finds the average long/short fund has generated insignificant alpha over long horizons. Manager selection matters more than strategy selection.

5. Assuming shorts always hedge. In a liquidity crunch, shorts can correlate with longs as both move together down or up. The diversification benefit is real on average and unreliable in crisis episodes.

Frequently Asked Questions

Q: What is long short equity strategy in simple terms? Long/short equity means owning stocks you expect to rise while simultaneously shorting stocks you expect to fall, so you can profit from both correct positive and correct negative views rather than depending entirely on the market going up.

Q: How does long short equity strategy affect investment decisions? It demands a negative research process alongside positive stock picking. Finding and sizing short positions requires different skills, scrutinising accounting, identifying competitive decay, and managing unlimited loss risk, compared to building the long book.

Q: What is a real-world example of long short equity strategy? The article's example shows a fund with $100M at 150/50 generating 25% gross return when longs return 15% and shorts fall 5%. That 25% compares to the market's 8% return, with roughly 17% attributed to the long exposure plus stock selection.

Q: How can investors use long short equity strategy in their portfolio? Match the benchmark to the fund's actual net exposure. Compare a 100% net fund to the index and a 30% net fund to cash-plus-alpha. Size short positions conservatively relative to equivalent-conviction longs to manage squeeze risk.

Q: How is long short equity strategy different from market neutral strategy? Long/short equity typically retains a net long bias of 30–100% and participates in broad market moves. Market neutral targets zero beta and earns returns exclusively from the spread between long and short books, independent of market direction.

Sources

1. CFA Institute. "Hedge Fund Strategies." https://www.cfainstitute.org/insights/professional-learning/refresher-readings/2025/hedge-fund-strategies
2. CFA Institute Enterprising Investor. "The Future of Long-Short Equity." https://blogs.cfainstitute.org/investor/2013/04/11/the-future-of-long-short-equity/
3. CFA Institute Enterprising Investor. "Beyond the Hype: Do Hedge Funds Deliver Value?" https://blogs.cfainstitute.org/investor/2025/02/05/beyond-the-hype-do-hedge-funds-deliver-value/

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.