TLDR:
The debt-to-equity ratio measures the proportion of a company’s financing that comes from debt relative to equity, indicating its financial leverage and risk profile.
Interpretation
Higher ratio = more leveraged = higher risk. Lower ratio = conservative financing. Optimal ratio varies significantly by industry.
D/E Ratios by Industry
An appropriate D/E ratio varies dramatically by industry. Capital-intensive industries like utilities, real estate, and manufacturing routinely carry high D/E ratios (2:1 to 5:1) because they have stable cash flows and hard assets that support borrowing. Technology and software companies, by contrast, typically carry very low D/E ratios because their assets are primarily intangible (code, data, talent) and their growth-phase cash flows are often negative.