Proportional Spread

AAA

DEFINITION of 'Proportional Spread'

A measure of a security's liquidity that is calculated by comparing the bid and ask prices quoted in the marketplace. The proportional spread is higher as liquidity decreases to compensate the dealer for the additional risk of creating a market in an illiquid security.

The proportional spread is calculated as the difference between closing ask and bid prices divided by the average price of the bid and ask.

Proportional Spread



Ask = Highest close in month
Bid = Lowest close in month

Also referred to as a proportional bid-ask spread.

INVESTOPEDIA EXPLAINS 'Proportional Spread'

The proportional spread is used to give an idea of the average round-trip transaction compensation to dealers. The average transaction cost to the investor is calculated as one-half of the proportional spread. In general, proportional spreads can range from less than 1% to over 5%. For example, the average proportional spread on the New York Stock Exchange was 0.6% in 2003.

RELATED TERMS
  1. Ask Size

    The amount of a security that a market maker is offering to sell ...
  2. Ask

    The price a seller is willing to accept for a security, also ...
  3. Illiquid

    The state of a security or other asset that cannot easily be ...
  4. Bid Size

    The number of shares being offered for purchase at a specified ...
  5. Bid-Ask Spread

    The amount by which the ask price exceeds the bid. This is essentially ...
  6. Bid

    1. An offer made by an investor, a trader or a dealer to buy ...
RELATED FAQS
  1. Why are the bid and ask quotes usually so far away from each other in after-hours ...

    After-hours trading is defined as the exchange of securities outside of an exchange's specified regular trading hours (usually ... Read Full Answer >>
  2. What are the advantages and disadvantages of listing on the Nasdaq versus other stock ...

    The primary advantages for a company of listing on the Nasdaq exchange are lower listing fees and lower minimum requirements ... Read Full Answer >>
  3. How do I calculate a modified duration using Matlab?

    The modified duration gauges the sensitivity of the fixed income securities to changes in interest rates. To calculate the ... Read Full Answer >>
  4. How do I calculate the rule of 72 using Matlab?

    In finance, the rule of 72 is a useful shortcut to assess how long it takes an investment to double given its annual growth ... Read Full Answer >>
  5. How do I calculate the standard error using Matlab?

    In statistics, the standard error is the standard deviation of the sampling statistical measure, usually the sample mean. ... Read Full Answer >>
  6. How do I adjust the rule of 72 for higher accuracy?

    The rule of 72 refers to a time value of money formula that investors use to calculate how quickly an investment will double ... Read Full Answer >>
Related Articles
  1. Investing Basics

    The Basics Of The Bid-Ask Spread

    The bid-ask spread is essentially a negotiation in progress. To be successful, traders must be willing to take a stand and walk away in the bid-ask process through limit orders.
  2. Trading Strategies

    Setting Vs. Getting: What Is A Price-Taker?

    Learn how the economic term "price taker" may separate investors from traders.
  3. Options & Futures

    Don't Let Brokerage Fees Undermine Your Returns

    Smart investors don't give away more money than necessary in commissions and fees. Find out how to save.
  4. Fundamental Analysis

    Understanding the Profitability Index

    The profitability index (PI) is a modification of the net present value method of assessing an investment’s attractiveness.
  5. Economics

    What is Neoliberalism?

    Neoliberalism is a little-used term to describe an economy where the government has few, if any, controls on economic factors.
  6. Fundamental Analysis

    Explaining the Monte Carlo Simulation

    Monte Carlo simulation is an analysis done by running a number of different variables through a model in order to determine the different outcomes.
  7. Economics

    Understanding Limited Liability

    Limited liability is a legal concept that protects equity owners from personal losses due to their ownership interest in the company.
  8. Fundamental Analysis

    Explaining the Empirical Rule

    The empirical rule provides a quick estimate of the spread of data in a normal statistical distribution.
  9. Economics

    Explaining Demographics

    Demographics is the study and categorization of people based on factors such as income level, education, gender, race, age, and employment.
  10. Fundamental Analysis

    Calculating Degree of Financial Leverage

    Degree of financial leverage (DFL) is a metric that measures the sensitivity of a company’s operating income due to changes in its capital structure.

You May Also Like

Hot Definitions
  1. Inbound Cash Flow

    Any currency that a company or individual receives through conducting a transaction with another party. Inbound cash flow ...
  2. Social Security

    A United States federal program of social insurance and benefits developed in 1935. The Social Security program's benefits ...
  3. American Dream

    The belief that anyone, regardless of where they were born or what class they were born into, can attain their own version ...
  4. Multicurrency Note Facility

    A credit facility that finances short- to medium-term Euro notes. Multicurrency note facilities are denominated in many currencies. ...
  5. National Currency

    The currency or legal tender issued by a nation's central bank or monetary authority. The national currency of a nation is ...
  6. Treasury Yield

    The return on investment, expressed as a percentage, on the debt obligations of the U.S. government. Treasuries are considered ...
Trading Center
×

You are using adblocking software

Want access to all of Investopedia? Add us to your “whitelist”
so you'll never miss a feature!