
Key Takeaways
- Market capitalization is a company's total value in the stock market.
- The value of a company is calculated by the number of shares a company has times the price the stocks are selling at.
- Companies are separated into three different groups by investors depending on their market cap: small, medium, and large.
What company has the biggest market capitalization?
Largest American companies by market capitalization. 1. Apple. AAPL. $2.752 T. $168.64.
How does market capitalization affect stock value?
- Large-cap companies are typically firms with a market value of $10 billion or more. ...
- Mid-cap companies are typically businesses with a market value between $2 billion and $10 billion. ...
- Small-cap companies are typically those with a market value of $300 million to $2 billion. ...
What investors should know about market capitalization?
What Are the Factors That Have an Impact on Market Caps?
- The two most important factors that impact the Market Capitalization of a company is, demand for its products or services of a company; and its Capability to cater to that ...
- Fluctuations can have a huge impact on the Market Cap. ...
- By exercising a warrant on the company stocks, it can reduce its market value.
What is market capitalization and why does it matter?
While every company may be unique, a company's total market value—its market capitalization, or market cap, for short—is widely used to create a context for judging company financial performance and business outlook. Larger companies tend to have more broadly diversified business structures than smaller firms.

What is a good market cap for a stock?
Large-cap: Market value of $10 billion or more; generally mature, well-known companies within established industries. Midcap: Market value between $3 billion and $10 billion; typically established companies within industries experiencing or expected to experience rapid growth.
How does capitalization affect stock price?
Market cap does not influence share prices. It works the other way around. Market cap is arrived at by multiplying the share price by the number of shares outstanding. So when a stock's price rises, so too does its market cap.
Why is market cap not important?
Market cap is meaningless, easily manipulated, and creates a false sense of value. It's actually even more than this. It's downright dangerous because it misleads investors and plays a role in the crypto panics and wild swings that so often impact the space.
Why is market capitalization important?
Market cap allows investors to size up a company based on how valuable the public perceives it to be. The higher the value, the "bigger" the company. The size and value of a company can inform the level of risk you might expect when investing in its stock, as well as how much your investment might return over time.
What is market cap in stocks?
Shares outstanding includes all shares — those available to the public and restricted shares available to and held by specific groups. Market cap allows investors to size up a company based on how valuable the public perceives it to be. The higher the value, the "bigger" the company. Public companies are also grouped based on their size — most ...
What is float adjusted market cap?
Many major stock indexes, like the S&P 500 and the Dow Jones Industrial Average, use float-adjusted market cap, as do many index funds and exchange-traded funds, which are types of mutual funds that choose their investments by mirroring a market index. Float-adjusted market cap is meant to give an even more accurate picture ...
What is the difference between large cap and small cap?
If large-caps are the big cruise liners that can withstand the stormiest seas, small-caps are the sailboats that can be rocked by a single wave. Still, the opportunity for growth they present can benefit an investor’s portfolio, provided the potential downside is buoyed by the relative stability of large-cap stocks.
What is a micro cap?
Micro- and mega-cap. There are two other market-cap categories, generally referred to as micro-cap (below $250 million) and mega-cap (the largest companies on the stock market, some of which overlap with large-cap). Micro-cap stocks are considered some of the riskiest investments.
How much is a mid cap company?
Mid-cap: $2 billion to $10 billion. If large-cap companies have already seen rapid growth, mid-cap companies are often in the midst of it. With that growth comes the opportunity for higher, faster gains, but also the potential for more drastic downturns.
How much is a small cap?
Small-cap: $250 million to $2 billion. Small-cap stocks are often young companies with the potential for high growth. These stocks may have the possibility of high returns (that small-cap could indeed grow to be a mid- or large-cap) but they also come with the possibility of significant losses.
What is enterprise value?
Enterprise value is mostly used to determine the price of a company if it were to be acquired outright. However, experienced investors can use enterprise value alongside other performance data to determine whether a stock price is currently under- or overvalued relative to similar companies.
What is market cap?
Market cap is based on the total value of all a company's shares of stock. Float is the number of outstanding shares for trading by the general public. The free-float method of calculating market cap excludes locked-in shares, such as those held by company executives and governments.
Why is market cap important?
It allows investors to understand the relative size of one company versus another. Market cap measures what a company is worth on the open market, as well as the market's perception of its future prospects, because it reflects what investors are willing to pay for its stock. Large-cap companies are typically firms with a market value ...
What is the difference between a mid cap and a small cap?
Mid-cap stocks generally fall between large caps and small caps on the risk/return spectrum. Mid-caps may offer more growth potential than large caps, and possibly less risk than small caps. Small-cap companies are typically those with a market value of $300 million to $2 billion.
What are the factors that affect a company's market cap?
There are several factors that could impact a company's market cap. Significant changes in the value of the shares—either up or down—could impact it, as could changes in the number of shares issued. Any exercise of warrants on a company's stock will increase the number of outstanding shares, thereby diluting its existing value.
How does exercise warrants affect stock?
Any exercise of warrants on a company's stock will increase the number of outstanding shares, thereby diluting its existing value. As the exercise of the warrants is typically done below the market price of the shares, it could potentially impact the company's market cap.
What is a large cap company?
Large-cap companies are typically firms with a market value of $10 billion or more. Large-cap firms often have a reputation for producing quality goods and services, a history of consistent dividend payments, and steady growth.
What happens when a company issues a dividend?
The same applies for a dividend. If a company issues a dividend—thus increasing the number of shares held—its price usually drops. To build a portfolio with a proper mix of small-cap, mid-cap, and large-cap stocks, you'll need to evaluate your financial goals, risk tolerance, and time horizon.
How to calculate market capitalization?
To calculate a company's market capitalization, you take the number of shares of stock issued by the company and multiply it by the closing price of one share of stock. Here is an example:
Why is market capitalization important?
Market capitalization is an important term for individual investors and those who work or hope to work in the financial sector. Understanding how to appropriately value companies makes the task of managing your money or the money of your investors much easier.
How many stocks does ERB have?
Here is an example: The publicly-traded company, ERB, has 10 million stocks issued. An individual stock costs $20 at the close of the market. Multiplying the issued stock number by the cost of an individual stock finds that ERB's market capitalization is 200 million dollars. If ERB's stock prices go up to $30 a share, ...
Why is market cap important?
Market cap only reflects a company's market value, not its debts or liabilities. Market cap is useful for determining a company's size, which can indicate a lot about a company's potential for an investor. For example, large companies are usually safer investment choices due to their longevity and stability.
What does it mean to have a difference in market capitalization?
Differences in market capitalization generally mean differences in the risk associated with a particular stock.
What are the three levels of market capitalization?
Traditionally, there are three levels of market capitalization: large-cap, mid-cap, and small-cap. In recent years, the categories mega-cap and micro-cap have been added at the top and bottom of the levels to reflect the range of company sizes. These levels are set based on the market capitalization value. Each level has a range, though the ranges are not standardized and may vary from one source to another.
What is a mid cap company?
Mid-cap. Mid-cap generally refers to those companies with a market value between $2 billion and $10 billion. Mid-cap companies offer a balance between the conservative, slow growth of mega-cap and large-cap investments, but are still relatively safe.
What is market capitalization?
Market capitalization is a key measure of profitability that is also used in equations to determine price-to-earnings and other significant metrics. Market cap is generally broken down as micro cap, small cap, mid cap, large cap and ultra or mega cap.
How to determine market capitalization?
It's determined by multiplying the company's stock price by its total number of outstanding shares. Investors can use market capitalization to assess the value of a stock they are considering buying.
Why is market capitalization important?
Market capitalization is a useful figure to examine when trying to understand a company's structure and profitability, and therefore a stock's value . It can be used to determine a variety of key performance metrics, including price-to-earnings and price-to-free-cash flow.
How to calculate market cap?
Colloquially called "market cap," it is calculated by multiplying the total number of a company's shares by the current market price of one share.
Understanding market capitalization
To understand market capitalization, you need to know how it’s calculated. First, find the number of shares a company has and multiply it by the stock price.
How to use market cap
You can use market cap to get a quick look at any company. For example, if the company has a huge market cap of hundreds of billions of dollars, it usually means the company has been doing the right thing for years, and it’s a low-risk investment.
3 limitations of market cap
Market cap is a useful measure for companies you want to invest in, but the measure is limited in these three ways.
4 other ways to analyze stocks
Market cap is not the only factor you could use when researching companies to invest in. Here are four other ways you could analyze stocks.
Bottom line
Market capitalization shows the company value as determined by the stock market, which can help you determine which stocks to invest in. Companies with large market cap are often low-risk investments but with a lower growth potential than smaller companies.
Kliment Dukovski
Kliment Dukovski is an investments writer who has written over 600 articles to help readers find and compare the best financial options. Kliment has also written on money transfers, home loans and more. Previously, he ghostwrote guides and articles on foreign exchange, stock market trading and cryptocurrencies.
What is market cap?
Market cap—or capitalization—refers to the total value of all a company's shares of stock. Knowing a company's market cap can help you compare the relative size of one company versus another.
Why is market cap important?
It allows investors to understand the relative size of one company versus another. Market cap measures what a company is worth on the open market, as well as the market's perception of its future prospects, because it reflects what investors are willing to pay for its stock. Large-cap companies are typically firms with a market value ...
What is the difference between a mid cap and a small cap?
Mid-cap stocks generally fall between large caps and small caps on the risk/return spectrum. Mid-caps may offer more growth potential than large caps, and possibly less risk than small caps. Small-cap companies are typically those with a market value of $300 million to $2 billion.
What is float in stock market?
Float is the number of outstanding shares for trading by the general public. The free-float method of calculating market cap excludes locked-in shares, such as those held by company executives and governments.
What are the factors that affect a company's market cap?
There are several factors that could impact a company's market cap. Significant changes in the value of the shares—either up or down—could impact it, as could changes in the number of shares issued. Any exercise of warrants on a company's stock will increase the number of outstanding shares, thereby diluting its existing value.
How does exercise warrants affect stock?
Any exercise of warrants on a company's stock will increase the number of outstanding shares, thereby diluting its existing value. As the exercise of the warrants is typically done below the market price of the shares, it could potentially impact the company's market cap.
How to build a portfolio of small cap, mid cap, and large cap stocks?
To build a portfolio with a proper mix of small-cap, mid-cap, and large-cap stocks, you'll need to evaluate your financial goals, risk tolerance, and time horizon. A diversified portfolio that contains a variety of market caps may help reduce investment risk in any one area and support the pursuit of your long-term financial goals. close. ...
What is market cap?
Market capitalization, often abbreviated as market cap, is a measure of a public company’s overall value as set by the market. Market cap can be used to compare companies. It is also a tool to help diversify a portfolio of investmentsand manage risk and return.
What is the market cap of a large company?
Large-cap companies usually have a market cap of $10 billion and up. Mid-cap companies usually have a market cap of $2 billion to $10 billion. Small-cap companies usually have a market cap of less than $2 billion. Sometimes companies with market caps of more than $200 billion are labeled mega-caps.
Can a stock split change market cap?
A stock split, on the other hand, can change share value, but won’t change market capitalization. A company with 10 million shares trading at $10 apiece has a market cap of $100 million. If it does a 2-for-1 split it will have 20 million shares trading at $5 after the split. So the market cap remains $100 million after the split.
Does market cap indicate fundamental value?
Even market cap, however, doesn’t necessarily indicate a company’s fundamental value. Rather, it reflects what the market perceives its value to be. Markets often under-value or over-value shares relative to their fundamental value. This can happen for a number of reasons.
Do you need to calculate market cap?
There’s usually no need for an investor to calculate market cap. This is a standard valuation measure, which means that it will be included in the statistical profile of a public company by almost any market information service. If the market cap is not already calculated, check the company’s balance sheet.
Is knowing the market cap of a company better than knowing its share price?
Knowing a company’s market cap is more useful than knowing its share price alone. That’s because a company with a high share price may be less valuable than another company with a lower share price but more shares outstanding. Even market cap, however, doesn’t necessarily indicate a company’s fundamental value.
