An Intellidex is a securities

Security (finance)

A security is generally a fungible, negotiable financial instrument representing financial value. Securities are broadly categorized into:* debt securities ,* equity securities, e.g., common stocks; and,...

 product created by and proprietary

Property

Property is any physical or intangible entity that is owned by a person or jointly by a group of people or a legal entity like a corporation...

 to the American Stock Exchange

American Stock Exchange

NYSE Amex Equities, formerly known as the American Stock Exchange is an American stock exchange situated in New York. AMEX was a mutual organization, owned by its members. Until 1953, it was known as the New York Curb Exchange. On January 17, 2008, NYSE Euronext announced it would acquire the...

. Intellidexes are created by analyzing

Analysis

Analysis is the process of breaking a complex topic or substance into smaller parts to gain a better understanding of it. The technique has been applied in the study of mathematics and logic since before Aristotle , though analysis as a formal concept is a relatively recent development.The word is...

 groups of stock

Stock

The capital stock of a business entity represents the original capital paid into or invested in the business by its founders. It serves as a security for the creditors of a business since it cannot be withdrawn to the detriment of the creditors...

s and selecting specific stocks to include in an investment portfolio

Portfolio (finance)

Portfolio is a financial term denoting a collection of investments held by an investment company, hedge fund, financial institution or individual.-Definition:The term portfolio refers to any collection of financial assets such as stocks, bonds and cash...

. These portfolios range from narrow to broad in scope and are usually created based on criteria matching the market

Stock market

A stock market or equity market is a public entity for the trading of company stock and derivatives at an agreed price; these are securities listed on a stock exchange as well as those only traded privately.The size of the world stock market was estimated at about $36.6 trillion...

 as a whole, specific investment styles, or certain industry sectors. Intellidexes and similar products, like exchange-traded fund

Exchange-traded fund

An exchange-traded fund is an investment fund traded on stock exchanges, much like stocks. An ETF holds assets such as stocks, commodities, or bonds, and trades close to its net asset value over the course of the trading day. Most ETFs track an index, such as the S&P 500 or MSCI EAFE...

s, are usually traded like normal listed or over-the-counter securities.