Skip to main content
← Back to S Definitions

Share

What Is a Share?

A share represents a single unit of ownership in a company or financial asset. When an investor purchases a share, they acquire a fractional claim on the issuing entity's assets and earnings. This fundamental concept is central to securities and wider capital markets, allowing companies to raise funds and investors to participate in their growth. The value of a share can fluctuate based on market supply and demand, the company's financial performance, and overall economic conditions. Holders of shares, known as shareholders, often have certain rights, such as voting rights on corporate matters and the potential to receive dividends from the company's profits.

History and Origin

The concept of a tradable share emerged to facilitate large-scale commercial ventures that required more capital than a single individual or family could provide. Early forms of joint-stock companies existed in ancient Rome and medieval Europe, but the modern share, as a transferable unit of ownership with limited liability, began to take shape in the 17th century. A pivotal moment occurred with the establishment of the Dutch East India Company (Vereenigde Oostindische Compagnie, or VOC) in 1602. The VOC was the first company to issue shares to a broad public, effectively conducting the world's earliest Initial Public Offering. This enabled numerous individuals to invest in profitable, but risky, overseas trade voyages, sharing in the company's profits and losses without direct involvement in its operations. This innovative approach to financing paved the way for the development of organized stock markets, with Amsterdam becoming the cradle of global share trading.4

Key Takeaways

  • A share signifies a unit of fractional ownership in a company, granting the holder certain rights and a claim on future earnings.
  • Shares are a primary mechanism for companies to raise capital and for investors to make an investment.
  • The value of a share is determined by market forces and influenced by the company's performance and broader economic factors.
  • Shareholders typically possess voting rights and may receive dividends, representing their share of company profits.
  • The liquidity of shares, particularly in public markets, allows investors to buy and sell them relatively easily.

Key Metrics Involving Shares

While a share itself is a unit, it forms the basis for several critical financial metrics used in valuation and financial analysis. Two prominent examples include:

Market Capitalization

Market Capitalization (or "Market Cap") represents the total value of a company's outstanding shares. It is calculated by multiplying the current share price by the total number of shares outstanding.
[ \text{Market Capitalization} = \text{Current Share Price} \times \text{Number of Outstanding Shares} ]
This metric provides a quick estimate of a public company's size and helps investors understand its overall market value. Market Capitalization is a key indicator often used to classify companies into different size categories (e.g., large-cap, mid-cap, small-cap).

Earnings Per Share (EPS)

Earnings Per Share (EPS) indicates how much of a company's profit is allocated to each outstanding share of its common equity. It is a widely used measure of a company's profitability.
[ \text{EPS} = \frac{\text{Net Income} - \text{Preferred Dividends}}{\text{Weighted Average Number of Common Shares Outstanding}} ]
A higher EPS generally indicates greater value, as the company is generating more profit per share.

Interpreting the Share

Interpreting a share involves understanding its multifaceted nature as a representation of both ownership and a tradable instrument. Fundamentally, owning a share means holding a piece of the issuing entity, with corresponding rights and potential rewards. The price of a share reflects the market's collective assessment of the company's future earnings potential, asset base, and overall financial health. For investors, interpreting a share involves assessing whether its current market price justifies its underlying value, considering factors like expected dividends, growth prospects, and the company's competitive landscape. The ability to buy and sell shares easily contributes to market liquidity, allowing investors to enter or exit positions based on their interpretations and financial goals.

Hypothetical Example

Consider a hypothetical technology startup, "InnovateTech Inc.," which decides to raise capital by issuing shares. Initially, the founders own 100% of the company. To fund expansion, InnovateTech Inc. decides to issue 10 million shares to the public at an Initial Public Offering price of $10 per share.

An investor, Sarah, purchases 1,000 shares of InnovateTech Inc. for $10,000. Sarah now holds 1,000 shares of the 10 million shares outstanding, representing a small fraction of the company's total ownership. If InnovateTech Inc. performs well and the share price rises to $15, Sarah's shares are now worth $15,000. If the company declares a dividend of $0.10 per share, Sarah would receive $100 in dividends ($0.10/share * 1,000 shares). Her decision to buy shares represents an investment in the company's future.

Practical Applications

Shares are integral to the functioning of modern financial markets and have numerous practical applications across investing, corporate finance, and regulation:

  • Raising Capital: Companies issue shares to raise capital for operations, expansion, or debt repayment. This process, especially through an Initial Public Offering, allows private entities to become public companyies and access broader pools of investor funds.3
  • Investment and Wealth Accumulation: Individuals and institutions purchase shares as a primary form of investment, aiming for capital appreciation (increase in share price) and/or income through dividends.
  • Corporate Governance: Shares often come with voting rights, enabling shareholders to influence corporate decisions, elect board members, and approve major corporate actions.
  • Market Valuation: The aggregate value of a company's shares traded on an exchange determines its Market Capitalization, a key indicator of its size and influence in the stock market.
  • Mergers and Acquisitions: Shares are frequently used as currency in mergers and acquisitions, where one company offers its shares to acquire another.
  • Regulatory Oversight: Securities regulators, like the U.S. Securities and Exchange Commission (SEC), establish requirements for companies that issue and trade shares to protect investors and maintain fair and orderly markets. The New York Stock Exchange (NYSE), for instance, has specific listing criteria that companies must meet to have their shares traded on its platform.2

Limitations and Criticisms

Despite their central role, shares and the equity markets face certain limitations and criticisms:

  • Volatility and Risk: The value of a share can be highly volatile, influenced by company performance, industry trends, economic cycles, and investor sentiment. Investors can lose a significant portion, or even all, of their investment if the company performs poorly or the market declines.
  • Dilution: When a company issues new shares, it can dilute the ownership percentage of existing shareholders and reduce earnings per share. This can be a concern, particularly for long-term investors.
  • Short-Termism: A common criticism is that the focus on quarterly earnings and short-term share price movements can incentivize corporate management to prioritize immediate financial results over long-term strategic investments, potentially harming the company's sustainable growth. Academic research has explored the economic damage that can arise from short-termism driven by informed investors with limited horizons.1
  • Lack of Control for Small Shareholders: While shares come with voting rights, individual small shareholders typically have minimal influence over corporate decisions compared to large institutional investors or founding families.
  • Information Asymmetry: Not all investors have equal access to information, which can lead to disparities in trading and potential disadvantages for less informed individuals.

Share vs. Stock

The terms "share" and "stock" are often used interchangeably, but there is a subtle distinction. While both refer to units of ownership in a company, "stock" typically refers to the general ownership equity of a company, encompassing all the shares issued. It's an abstract concept representing the total capital raised through equity issuance. "Share," on the other hand, refers to a single, quantifiable unit of that stock. For example, an investor might say they own "100 shares of Microsoft stock." Here, "stock" refers to the entire pool of Microsoft's equity, and "shares" denotes the specific number of units held. So, while "stock" describes the overall capital, "share" is the discrete component of that capital that is bought and sold.

FAQs

Q: Can a company issue different types of shares?
A: Yes, companies can issue different classes of shares, most commonly common shares and preferred shares. Common shares typically come with voting rights and fluctuate in value more directly with the company's performance. Preferred shares usually offer fixed dividends and may have different or no voting rights, often taking precedence over common shares in dividend payments and liquidation.

Q: How do shares increase in value?
A: Shares can increase in value, leading to capital appreciation, primarily due to factors such as improved company earnings, positive market sentiment, successful new products or services, industry growth, or overall economic expansion. Increased demand for the company's stock market listing also drives up the share price.

Q: What happens if a company goes bankrupt?
A: If a company goes bankrupt, shareholders are typically the last in line to receive any funds from the liquidation of assets, after creditors and bondholders have been paid. In many cases, common shareholders receive nothing, meaning their investment can be completely lost.

Q: Are shares a good investment?
A: Shares can be a good investment for long-term wealth creation, offering potential for capital appreciation and dividends. However, they also carry inherent risks, including market volatility and the possibility of loss. An investor's decision to purchase a share should align with their financial goals, risk tolerance, and thorough research into the company's fundamentals and valuation.