ROE
Return on equity
💡 What is ROE (Return on Equity)?
One-line definition: ROE (Return on Equity) is a profitability metric that shows "how well a company makes money with the money its shareholders invested." It is the ratio of net income to shareholders' equity (net assets), expressed as a percentage (%).
In English, it is called Return on Equity, ROE, or Shareholders Equity Return. In Korea, it is referred to as Return on Equity (ROE), Return on Shareholders' Equity (ROE), or Return on Capital (ROC).
ROE is famously one of the financial metrics that Warren Buffett values most. Buffett has advised: "Look for companies whose ROE has been consistently above 15%." The reason is simple: a high ROE means the company has an outstanding ability to generate more profit with the same amount of capital.
To explain with an analogy, suppose two friends each invest 100 million won to start a business. Friend A's business earns 20 million won in net profit after one year (ROE 20%), while Friend B earns 5 million won (ROE 5%). Even though they invested the same amount of money, Friend A's business earns money 4 times more efficiently. If you had to invest in one of them, who would you choose? Of course, Friend A. This is the core concept of ROE.
In the actual U.S. stock market, Apple (AAPL) has an ROE of around 150–170%. This is an astonishing figure, meaning the company earns more than 1.5 times its shareholders' invested capital in net profit every year. Microsoft (MSFT) records an ROE of about 35–40%, and Coca-Cola (KO) has an ROE of around 40–45%. In contrast, General Motors (GM), which is in the capital-intensive auto industry, is at about 15–20%.
The reason ROE is important to investors is that it shows a company's potential for compound growth. If a company with an ROE of 20% reinvests all of its profits, in theory its shareholders' equity grows by 20% every year. After 10 years, it becomes about 6.2 times the original capital. This is the magic of compounding, and it is why companies that sustain a high ROE tend to see their stock prices rise significantly over the long term.
English terms
Return on Equity, ROE, Equity Return, Shareholders Return on Equity
Korean terms
Return on Equity, Return on Shareholders' Equity, Return on Capital, ROE
📐 How to Calculate
ROE = Net Income / Shareholders' Equity x 100
Shareholders' Equity = Total Assets − Total Liabilities (= Shareholders' Stake)
Calculating ROE is simple. The net income is the net profit for the period found at the bottom of the Income Statement, and shareholders' equity is the total assets minus total liabilities on the Balance Sheet. Since shareholders' equity represents the shareholders' stake, ROE can be thought of as the rate of return on investment from the shareholders' perspective.
Real example — Microsoft (MSFT):
Net income (2024): approximately $88 billion
Shareholders' equity: approximately $229 billion
ROE = $88B / $229B x 100 = approximately 38.4% → For every $100 shareholders invested, the company earns about $38.4 in net profit.
Breaking down ROE with DuPont Analysis:
To understand ROE more deeply, DuPont analysis is useful. ROE can be broken down into three components:
ROE = Profit Margin x Asset Turnover x Equity Multiplier
1. Profit Margin = Net Income / Revenue → Is the margin high? (Profitability)
2. Asset Turnover = Revenue / Total Assets → Is the company using its assets efficiently? (Efficiency)
3. Equity Multiplier = Total Assets / Shareholders' Equity → How much debt is being used? (Leverage Level)
DuPont analysis helps you figure out why ROE is high. Apple's (AAPL) ROE exceeding 150% is due to its high profit margin (around 25%) and the fact that large-scale share buybacks have significantly reduced shareholders' equity. In contrast, banks' high ROE mainly comes from high financial leverage (debt ratio). Even with the same ROE, the underlying causes are different, and so the investment risks differ. This is why DuPont analysis matters.
📊 How to Interpret (Range-by-Range Guide)
Below 0% (Negative) — Loss-making companies
Since net income is negative, ROE is also negative. This means the company is not making money. Among loss-making companies, some growth-stage tech firms (like early Amazon or Tesla) may still have future value if their investments lead to revenue growth, but if losses persist and revenue is also declining, you should avoid investing.
0–10% — Low ROE
Capital efficiency is not great. Compared to bank deposit rates or bond yields, it may not be very attractive. Capital-intensive industries (utilities, telecom, real estate) may show this level, but if it's low even within the same industry, there may be issues with management efficiency.
10–20% — Acceptable ROE
This is considered an acceptable level in most industries. Since the average ROE of S&P 500 companies is around 15–18%, being in this range means you meet the market average. Coca-Cola (KO) often sits at the top of this range, while manufacturers like General Motors (GM) tend to be at the lower end.
20–40% — Excellent ROE
This level shows a strong competitive advantage and efficient capital use. Companies with strong competitive positions such as Microsoft (MSFT, ~38%), Nvidia (NVDA, ~35%), and Visa (V, ~45%) fall in this range. This is also the ROE range Warren Buffett prefers. Companies that maintain this level of ROE for 5 years or more are very suitable long-term investment candidates.
Above 40% — Very High ROE (Cause Analysis Required)
A very high ROE may indicate an outstanding business model, but it could also result from share buybacks that have reduced shareholders' equity or from excessive use of debt. Apple (AAPL) has an ROE above 150% due to large-scale share buybacks that greatly reduced shareholders' equity, but this is not a negative signal. On the other hand, a high ROE driven by excessive debt can carry high risk, so you must always analyze the cause.
🔄 Comparison with Similar Metrics
ROE vs ROA (Return on Assets)
ROA is the return on total assets (shareholders' equity + liabilities), while ROE is the return on shareholders' equity only (the shareholders' stake). If ROE is much higher than ROA, the difference is due to debt (leverage). For example, if ROA is 5% but ROE is 20%, it means the company is amplifying its returns 4 times through debt. Banks typically have ROA of 1–2% but achieve ROE of 10–15% through high leverage.
ROE vs ROIC (Return on Invested Capital)
ROIC is the ratio of after-tax operating income to "invested capital," which includes both shareholders' equity and interest-bearing debt. While ROE can be distorted by the debt structure, ROIC accounts for both debt and equity, so it shows capital efficiency more accurately. This is why Warren Buffett values ROIC alongside ROE.
ROE vs Profit Margin
Profit margin is the ratio of net income to revenue, while ROE is the ratio of net income to shareholders' equity. Even with a high profit margin, ROE can be low if asset turnover is low, and even with a low profit margin, ROE can be high if assets are used efficiently. Walmart (WMT) has a low profit margin of about 2–3%, but thanks to its high asset turnover, its ROE reaches about 20%.
🎯 Practical Application
Strategy 1: Warren Buffett-style ROE Screening
This strategy picks only companies that have had an ROE of 15% or higher for 5 consecutive years. A high ROE for one or two years may be due to temporary factors (asset sales, one-time gains, etc.), but a high ROE sustained for 5 years or more reflects a true competitive advantage. Representative stocks that meet this criterion include dividend aristocrats like Coca-Cola (KO), Procter & Gamble (PG), and Johnson & Johnson (JNJ).
Strategy 2: ROE Trend Analysis
The trend (direction) of ROE may be more important than its absolute value. A company whose ROE rises every year from 10% to 15% to 20% sends a strong signal that management efficiency is improving. Conversely, a company whose ROE drops from 25% to 20% to 15% may be losing its competitive edge. In particular, companies with growing revenue and rising ROE show a positive signal that economies of scale are at work.
Strategy 3: Evaluating ROE Quality with DuPont Analysis
Even with the same ROE of 20%, the investment appeal differs depending on the cause. A company with a high ROE driven by a high profit margin (e.g., Visa) has strong pricing power. A company with a high ROE driven by high asset turnover (e.g., Walmart) has outstanding operational efficiency. A company with a high ROE driven by leverage (e.g., large banks) is taking on debt risk. The ideal case is when both profit margin and asset turnover are high at the same time.
Strategy 4: Combining ROE and PBR
This is a value-investing strategy that looks for stocks with high ROE but low PBR (Price-to-Book Ratio). If ROE is 20% but PBR is 1.5x, the market may be undervaluing this company's profitability. Conversely, if ROE is 10% but PBR is 5x, the stock is expensive relative to its current profitability. This combination is in line with Benjamin Graham's value investing principles.
Strategy 5: Calculating Sustainable Growth Rate (SGR)
The Sustainable Growth Rate is calculated as ROE x (1 − Dividend Payout Ratio). It represents the maximum growth rate the company can achieve using only internal profits, without raising outside funds. For example, if ROE is 25% and the dividend payout ratio is 40%, SGR is 25% x 0.6 = 15%. This company has the potential to grow 15% per year. If SGR is higher than the actual revenue growth rate, it means the company has plenty of room to grow.
🏭 Industry Characteristics
Technology
Software companies tend to have very high ROEs because they require little capital investment and have high margins. Microsoft (MSFT) at about 38%, Visa (V) at about 45%, and Adobe (ADBE) at about 35% are representative examples. Semiconductor companies may have relatively lower ROEs because they require large-scale facility investments, but Nvidia (NVDA) is recording a high ROE of around 35% thanks to the AI boom.
Financials
Banks have ROEs of around 10–15% due to their high leverage (debt). JP Morgan (JPM) at about 15% and Goldman Sachs (GS) at about 12% are representative. The ROE of the financial industry is heavily influenced by the interest rate environment — during rising rates, the net interest margin improves and ROE rises. Insurance companies tend to have more ROE volatility than banks.
Consumer Goods
Consumer goods companies with strong brand power maintain stable, high ROEs. Coca-Cola (KO) is around 40%, Nike (NKE) is around 35%, and McDonald's (MCD) records over 100%. McDonald's extremely high ROE is because its franchise model requires few assets, and large-scale share buybacks have shrunk shareholders' equity to near zero.
Utilities/Energy
Utilities, which require large-scale facility investments, tend to have low ROEs of 8–12%. Energy companies (ExxonMobil, Chevron) show large ROE fluctuations depending on oil prices — above 20% when oil prices are high, and falling into single digits when they are low. Since the low ROE in this industry is a structural feature, relative comparison within the same industry is more meaningful.
⚠️ Cautions
ROE Distortion from Share Buybacks
Large-scale share buybacks reduce shareholders' equity and artificially inflate ROE. Apple's (AAPL) ROE exceeding 150% is primarily due to this. In this case, rather than the ROE figure itself, you should look at the absolute amount and growth rate of net income together. For companies with negative shareholders' equity (McDonald's, Starbucks), ROE is meaningless, making meaningful comparison difficult.
High ROE from Excessive Debt
Heavy borrowing reduces the proportion of shareholders' equity and raises ROE. But this is a risky structure. During a recession or rising interest rates, interest expenses surge, net income drops sharply, and in the worst case, there is a risk of bankruptcy. When ROE is high, always check the debt-to-equity ratio together.
Cross-Industry Comparison Is Limited
ROE structurally differs by industry. You cannot simply compare a software company's 30% ROE with a utility company's 10% ROE and conclude that software is 3 times better. Always compare within the same industry, and judge based on whether ROE is higher or lower than the industry average.
Beware of One-Time Factors
ROE can be temporarily inflated by one-time gains such as asset sales, litigation settlements, or tax refunds. Conversely, it can be temporarily depressed by large restructuring costs or impairment losses. Therefore, don't look at just one year's ROE — it's important to check the average ROE and trend over 3–5 years together.
✅ Investor Checklist
☑ Is ROE 15% or higher? (Basic profitability threshold)
☑ Has ROE been maintained steadily over the past 3–5 years?
☑ Is the high ROE driven by profitability or by leverage? (DuPont analysis)
☑ How does ROE compare to peers in the same industry?
☑ Is ROE distorted by share buybacks or excessive debt?
☑ Have you checked the leverage effect by comparing with ROA?
❓ Frequently Asked Questions (FAQ)
Q. Is a negative ROE always a bad company?
A. Not necessarily. Companies in early growth stages may post losses (negative ROE) due to R&D investments and market expansion costs while still growing revenue rapidly. Amazon (AMZN) had losses (negative ROE) for several years after its IPO, but it focused on expanding market share and eventually grew explosively. However, if losses persist for more than 5 years and revenue growth also slows, it may indicate structural problems, so caution is needed.
Q. Is an ROE above 100% possible?
A. Yes, it's possible. If share buybacks significantly reduce shareholders' equity, ROE can easily exceed 100%. Apple (AAPL) has an ROE of over 150% because its large-scale share buyback program has greatly reduced shareholders' equity. Also, companies with negative shareholders' equity (where liabilities exceed total assets) have ROE calculations that become meaningless, and representative examples are McDonald's (MCD) and Starbucks (SBUX).
Q. Should I look at ROE or ROA?
A. It depends on the industry. In industries like financial services where leverage is central to the business model, ROE is more meaningful. In industries like manufacturing and utilities where asset efficiency matters, ROA should also be looked at. The best approach is to look at ROE and ROA together. If ROE is high but ROA is low, it means leverage is high, so you should check debt risk.
Q. Why does Warren Buffett value ROE so much?
A. Warren Buffett believes "in the long run, stock prices follow ROE." Companies with consistently high ROE can reinvest profits to enjoy the compounding effect, which maximizes shareholder value over time. The reason he has invested in companies like Coca-Cola (KO), American Express (AXP), and Moody's (MCO) for decades is precisely because these companies have consistently maintained ROEs above 20%. The key is the "sustainability of high ROE."
🇰🇷 Notes for Korean Investors
ROE is also a very important metric in the Korean stock market. The average ROE of KOSPI-listed companies is around 8–10%, which is lower than the average ROE of the U.S. S&P 500 (about 15–18%). This means Korean companies have lower capital efficiency than their U.S. counterparts, and is one of the reasons U.S. stocks have delivered higher returns over the long term.
Using ROE as a key criterion is effective when Korean investors select U.S. stocks. In particular, companies that have maintained an ROE of 20% or higher for more than 5 years are often high-quality companies that are hard to find in the Korean market. Long-term investment in such companies can be expected to deliver high compound returns measured in Korean won.
To check ROE, you can search for the stock on Finviz to see it right away. You can also check ROE on Yahoo Finance's Statistics tab, and view the trend over the past 5 years for free on Macrotrends.net.