How to tell if a company is headed for trouble.

Cash flow is the most honest measure of financial health. When cash flow deteriorates, earnings quality is often the next casualty.

Free cash flow turning negative

A company that generates positive net income but negative free cash flow is consuming more cash than it produces. A quarter or two of negative FCF can be normal for a growing company. A multi-year trend of negative FCF — especially alongside rising debt — is one of the clearest financial distress signals. Our free cash flow guide covers this in depth.

Operating cash flow declining while revenue grows

This divergence is a major red flag in stock analysis. If revenue is increasing but operating cash flow is flat or falling, it often means the company is not collecting cash from its sales. Causes can include deteriorating accounts receivable (customers not paying), growing inventory (products not selling), or aggressive revenue recognition.

Operating cash flow to net income ratio below 1

Divide operating cash flow by net income. A ratio consistently below 1 means earnings are not backed by real cash. If it stays below 0.5 for several quarters, earnings quality is likely poor.

Debt growing faster than equity and cash

The debt to equity ratio rising over multiple quarters is a clear signal that financial leverage is increasing. The situation is more dangerous when cash and equivalents are not growing alongside the debt.

Debt maturities approaching without refinancing options

A company with large debt payments due within 12 to 24 months and limited cash or access to credit markets faces refinancing risk. If interest rates have risen or the company’s credit profile has weakened, new debt will be more expensive or unavailable.

Interest coverage below 2

Interest coverage (earnings before interest and taxes divided by interest expense) measures how easily a company can pay interest on its debt. Below 2 is a warning sign. Below 1 means the company is not earning enough to cover its interest costs.

Gross margin compression

A sustained decline in gross profit margin can indicate pricing pressure, rising input costs, or a deteriorating product mix — all signals that the competitive position is weakening. Compare the gross margin trend against industry peers to judge whether the pressure is company-specific or sector-wide.

Revenue growth slowing while costs keep rising

When revenue growth decelerates but operating expenses continue climbing, operating margin compresses. If the company cannot adjust its cost structure, profitability will erode. This pattern is especially dangerous for companies with high fixed costs.

Earnings growth driven entirely by cost cuts

Cutting costs to boost earnings is a finite strategy. If revenue is stagnant or declining and the only earnings growth comes from reducing expenses, the company has a top-line problem that will eventually overwhelm the savings.

The balance sheet reveals financial structure problems that the income statement may not show. Our balance sheet analysis guide covers these in full detail.

• Negative shareholder equity: Liabilities exceed assets. The company has negative net worth. This is one of the most serious company bankruptcy warning signs.
• Current ratio below 1: Current liabilities exceed current assets. The company may struggle to meet short-term obligations.
• Inventory growing faster than revenue: Unsold goods piling up can signal weakening demand or product obsolescence.
• Goodwill ballooning: A balance sheet loaded with goodwill from acquisitions creates risk of large future write-downs.
• Accounts receivable growing faster than revenue: Customers are taking longer to pay, which strains cash flow.

P/E ratio falling for the wrong reasons

A falling P/E ratio can look cheap, but check why. If the P/E is dropping because earnings are rising while the stock price is flat, that is healthy. If it is dropping because the stock price is falling faster than earnings, the market is pricing in future problems. Understanding P/E ratio context helps distinguish between value and value traps.

One-time items masking weak operations

Companies sometimes report “adjusted” earnings that exclude repeated items like restructuring charges, asset impairments, or litigation costs. If “one-time” charges appear every year, they are not one-time — they are operating expenses. Always compare GAAP net income to adjusted earnings to see the full picture.

Share count rising through dilutive issuance

Companies that consistently issue more shares (through stock-based compensation or secondary offerings) dilute existing shareholders. Rising share counts can prop up reported revenue per share but disguise weakening per-share fundamentals. Check whether shares outstanding are increasing over time.

Clusters of insider selling

While single insider sales are common, clusters of multiple insiders selling significant portions of their holdings at the same time is a meaningful warning sign. Pay special attention when the CEO, CFO, or board members all reduce positions within a short window.

Insider ownership declining

When insider ownership as a percentage of shares outstanding is falling over time, it suggests the people closest to the business are reducing their alignment with shareholders. Very low insider ownership (below 1% excluding the CEO) can be a yellow flag.

Institutional investors reducing positions

While institutions buy and sell for many reasons, a sustained decline in institutional ownership can indicate that professional investors are losing confidence. Cross-reference with other warning signs before drawing conclusions.

• Revenue recognition changes: Sudden changes in how or when revenue is recorded can signal an attempt to dress up results.
• Frequent auditor changes: Switching auditors can indicate disagreements about accounting treatment.
• Restatements of prior results: Correcting previously reported numbers is a significant red flag.
• Related-party transactions: Complex or unusual transactions with entities connected to management warrant scrutiny.
• Capitalizing normal expenses: Treating routine operating costs as capital investments inflates earnings and hides real expenses.

Start applying these signals by opening a stock on the US stocks page and reviewing its cash flow, debt, margins, and ownership trends. Return to the full fundamentals guide for the complete picture.