Private Equity
When you hear that a well-known private company was "taken over by a private equity firm," what's actually happening is a specific playbook of borrowing, improving, and selling — and understanding that playbook explains both spectacular PE success stories and the controversy that follows the industry.
What PE is: buying, improving, and selling private companies
Private equity (PE) is the business of buying entire companies (or large controlling stakes in them), improving their operations and profitability over several years, and then selling them for a profit — either to another company, to another PE firm, or by taking the company public via an IPO. Unlike VC, which invests small stakes in young, unproven startups, PE typically targets established, cash-generating businesses — a restaurant chain, a manufacturer, a healthcare provider — that are undervalued, underperforming, or in need of professional management to reach their potential.
Like VC, PE firms raise money from large institutional investors into a fund, and the fund's managers (the PE firm) earn a management fee plus a share of profits — the same "2-and-20"-style structure covered in Lesson 8.3.
The leveraged buyout (LBO): how debt amplifies returns
The signature technique of private equity is the leveraged buyout (LBO) — buying a company using a relatively small amount of the PE firm's own investor money (equity) and a large amount of borrowed money (debt), with the target company's own future cash flows used to pay down that debt over time. "Leverage" here just means using borrowed money to amplify the size of a deal beyond what the equity alone could buy.
Why does debt amplify returns? Because interest costs on debt are typically far lower than the return the PE firm expects to earn on the deal overall, and because using debt means less of the firm's own equity is tied up, so the same equity dollar can be spread across more or larger deals. Consider a simple comparison: buying a $100M company entirely with equity, versus buying it with $30M equity and $70M debt.
The total dollar profit ($50M) is identical in both cases — leverage doesn't create extra profit by itself — but because far less of the PE firm's own equity was required to control the same $100M asset, the percentage return on that equity is dramatically higher. This is also precisely why leverage cuts both ways: if the company's value had fallen instead of risen, the equity holder absorbs losses first and the debt still has to be repaid, meaning a modest decline in the company's value can wipe out the equity investment entirely.
Value creation: operational improvement, multiple expansion, leverage paydown
PE firms create (or claim to create) value in three distinct ways, and evaluating any specific deal means asking which of these actually did the work:
- Operational improvement — actively making the business run better: cutting unnecessary costs, improving pricing, expanding into new markets, upgrading management, or investing in technology, so the company earns more profit on the same or better revenue.
- Multiple expansion — buying the company at a low valuation multiple (e.g., paying 8 times its annual profit) and selling it later at a higher multiple (e.g., 12 times profit), because market sentiment, industry trends, or company scale improved during the holding period, even if the profit itself didn't change dramatically.
- Leverage paydown — using the company's own cash flow during the holding period to pay down the debt used in the original purchase, so that by the time of sale, a smaller share of the company's value is owed to lenders and a larger share belongs to the equity holder (the PE firm).
Historically, industry critics argue that too much PE "value creation" has come from multiple expansion and leverage effects rather than genuine operational improvement — meaning some of the apparent skill is really just financial engineering and favorable market timing, not better-run businesses. The strongest PE firms aim to demonstrate real operational improvement as the core of their pitch to investors.
The PE fund timeline: raise → invest → exit (typically 10 years)
Like a VC fund, a PE fund has a defined lifecycle, usually spanning about a decade:
This long, illiquid timeline (investors' money is typically locked up for most of the decade) is one reason PE has historically been the domain of large institutions rather than everyday retail investors — though newer, more liquid PE-linked investment vehicles have started to open small slices of the asset class to broader audiences in recent years.
A PE firm buys a company for $100M using $30M equity and $70M debt, improves it, and sells for $150M. What is the approximate return on their equity?
Reveal Answer
Assuming the $70M in debt is still outstanding at the time of sale (i.e., no debt was paid down during the holding period, for simplicity): the equity holders receive the sale price minus the debt owed, which is $150M − $70M = $80M. Since they originally put in $30M of equity, their profit is $80M − $30M = $50M, on a $30M investment — a return of roughly 167% (a "2.67x" multiple on invested equity), compared to just a 50% return ($50M profit on $100M) if the company had been purchased entirely with equity and no debt. This illustrates the amplifying effect of leverage: the same $50M of total profit translates into a much higher percentage return for the equity holders because they only had to put up $30M rather than the full $100M purchase price. In practice, PE firms typically do pay down some debt using the company's cash flow during the holding period, which would make the actual return on equity in a real deal even higher than this simplified estimate.