What Are Securities?
In plain English
Securities are tradable financial instruments that hold monetary value and represent either an ownership position (equity), a creditor relationship (debt), or rights to ownership (derivatives). They are regulated by the SEC and form the foundation of capital markets.
What Are the Main Types of Securities?
Securities fall into three categories: Equity securities (stocks) represent ownership in a company. Debt securities (bonds) represent loans to a government or corporation. Derivative securities (options, futures) derive their value from an underlying asset. Each type carries different risk and return profiles.
How Are Securities Regulated?
In the U.S., the Securities and Exchange Commission (SEC) oversees securities markets. Companies must register securities before offering them publicly and disclose financial information. FINRA regulates broker-dealers, and the SIPC provides limited insurance if a brokerage fails. These layers of regulation protect investors.
How Do Securities Trade?
Securities trade on exchanges like the NYSE and Nasdaq, or over-the-counter (OTC) through dealer networks. Exchange-traded securities offer greater transparency and liquidity. Modern electronic trading enables near-instantaneous execution through market orders and limit orders.
Frequently asked questions
Is cryptocurrency a security?
This is an evolving legal question. The SEC has argued that many cryptocurrencies meet the definition of a security under the Howey test, while the industry often disagrees. Regulatory clarity is still developing, and classification varies by jurisdiction and specific token.
What is the difference between a security and a commodity?
Securities represent financial claims (ownership or debt) and are regulated by the SEC. Commodities are physical goods like gold, oil, or wheat, regulated by the CFTC. Some financial instruments, like futures, can blur the line between the two categories.
Keep exploring
Related terms
Stock
A stock represents a share of ownership in a company. When you buy stock, you become a part-owner of that business and can benefit from its growth through price appreciation and dividends.
Bond
A bond is a fixed-income investment where you lend money to a government or corporation in exchange for regular interest payments and the return of principal at maturity. Bonds are typically lower-risk than stocks.
Options Trading
Options are financial contracts that give you the right, but not the obligation, to buy or sell an asset at a specific price before a set expiration date. Options can be used for speculation, hedging, or income generation.
ETF (Exchange-Traded Fund)
An ETF is a basket of securities that trades on a stock exchange just like a single stock. ETFs combine the diversification of mutual funds with the flexibility and low cost of individual stock trading.
Market Capitalization
Market capitalization is the total market value of a company's outstanding shares. It is used to classify companies as large-cap, mid-cap, or small-cap and helps investors understand a company's relative size.