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The Three Core Financial Statements Investors Should Know

Every public company is required to disclose its financials in three key reports: the income statement, the balance sheet, and the cash flow statement. Here's what each one tells you — and how to read between the lines.

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Whether you're building a stock screener, running a portfolio analysis, or just trying to understand what’s behind a company’s market cap — it all comes down to financials.

Public companies are required to publish three main types of financial statements, typically quarterly and annually:

  1. Income Statement (a.k.a. Profit and Loss Statement)
  2. Balance Sheet
  3. Cash Flow Statement

Each tells a different part of the story. Let’s break them down.


1. Income Statement — Are They Making Money?

The income statement shows how much a company earned, spent, and profited over a period of time.

Key line items include:

  • Revenue – total sales
  • Operating expenses – costs to run the business
  • Net income – bottom-line profit after all expenses and taxes

Why it matters: This report answers the most basic question — is the company profitable? But profit can be engineered, which is why it’s only one piece of the puzzle.


2. Balance Sheet — What Do They Own (and Owe)?

The balance sheet is a snapshot of the company’s financial position at a specific point in time. It lists:

  • Assets – what the company owns (cash, inventory, property)
  • Liabilities – what it owes (debt, accounts payable)
  • Equity – the difference between assets and liabilities

Why it matters: It helps you understand leverage, liquidity, and how well the company can weather financial shocks.


3. Cash Flow Statement — What’s Actually Happening with Cash?

The cash flow statement tracks how money moves in and out of the company. It's split into three sections:

  • Operating activities – cash from core business operations
  • Investing activities – cash spent on or received from investments (like equipment or acquisitions)
  • Financing activities – cash raised from or paid to investors (like issuing stock or paying dividends)

Why it matters: A company might show profits on paper while burning through cash. This report shows whether the business is truly self-sustaining.


Final Thoughts: Don’t Rely on One Statement

Smart investors know better than to judge a company by a single report. Revenue growth looks great — but is it backed by real cash flow? Profitability matters — but what if the company is drowning in debt?

That’s why serious analysis starts with all three financial statements — and goes deeper from there.

At CIS Fundamentals, we provide structured, developer-friendly access to:
✅ Cleaned and normalized financials
✅ Consistent historical data across companies
✅ Fast and flexible API for fundamental analysis

Whether you're building an app, screening for value, or integrating financials into your internal tools —
our API delivers the data you actually need.

👉 Request access to the API or read the docs