1.3. What Is a Public Company?
Lesson objective
Understand why some companies trade in public markets.
A public company is a business whose shares can be bought and sold in public markets. To access those markets, a company must meet regulatory requirements and periodically disclose information about its operations, results, and risks.
Companies issue shares to raise capital for expansion, research, acquisitions, debt reduction, or other corporate purposes. After issuance, those shares usually trade among investors in the secondary market.
Being public does not make a company safe, profitable, or suitable for every investor. It means that information is more widely available and that an organized mechanism exists for trading its securities.
Simple example
Microsoft trades on Nasdaq under the ticker MSFT. Investors can buy or sell its shares through a broker, while the company files periodic reports with the SEC.
From private business to public ownership
Capital flow: Investors → company capital → operations/investment → business results → value retained or returned
Once shares trade in the secondary market, most day-to-day trades occur between investors rather than sending new cash directly to the company.
Market capitalization = Share price × Shares outstanding
Worked example
100 million shares at $25 each imply a $2.5 billion market cap. A price change alters market cap even if the company issues no new shares.
Confirm the legal company name, ticker, exchange, share class, and security type before analyzing the numbers.
Essential terms
| Term | Practical meaning | |---|---| | Initial Public Offering / IPO | A company's first broad sale of shares to the public. | | Secondary market | The market where investors trade securities that have already been issued. | | Issuer | A company or organization that issues a security. |
What you should remember
- Public trading improves access but does not remove risk.
- Regulatory filings are a central source for research.
Practice in Finzati
Find three familiar companies in Finzati and record their ticker, industry, and IPO date.