Portfolio Pumping

AAA

DEFINITION of 'Portfolio Pumping'

The illegal act of bidding up the value of a fund's holdings right before the end of a quarter, when the fund's performance is measured. This is done by placing a large number of orders on existing holdings, which drives up the value of the fund.

Also known as "marking the close".

INVESTOPEDIA EXPLAINS 'Portfolio Pumping'

Portfolio pumping can be highly destructive for investors in the fund because it is a temporary gain and the stocks will generally fall back to previous levels once the price manipulation is over. For example, if a fund has 1,000 shares of ABC purchased for $10 per share, if the shares are trading at $9 right before the managers' performance is measured, they will have performed poorly. As a result, the managers may resort to portfolio pumping and place enough orders to bid the price to $14, dramatically increasing the fund's performance. However, it is likely that the shares will fall back towards $9, leaving investors with a $9 stock that was made to look like a $14 stock.

RELATED TERMS
  1. Bucketing

    A situation where, in an attempt to make a short-term profit, ...
  2. Churning

    Excessive trading by a broker in a client's account largely to ...
  3. Performance Audit

    An audit performed on an asset manager by an outside accounting ...
  4. Mutual Fund

    An investment vehicle that is made up of a pool of funds collected ...
  5. Fund Manager

    The person(s) resposible for implementing a fund's investing ...
  6. Bid

    1. An offer made by an investor, a trader or a dealer to buy ...
Related Articles
  1. Personal Finance

    4 Dishonest Broker Tactics And How To Avoid Them

    Protecting yourself from unscrupulous practices means knowing how to spot them.
  2. Active Trading Fundamentals

    The Short And Distort: Stock Manipulation In A Bear Market

    High-quality stock reports needn't be confused with stock manipulators' dramatic claims.
  3. Investing

    How does a pump and dump scam work?

    A pump and dump scam is the illegal act of an investor or group of investors promoting a stock they hold and selling once the stock price has risen following the surge in interest as a result ...
  4. Investing Basics

    How do regulators ensure that markets are conducted at arm's length?

    Learn about arm's length transactions and how the Investment Advisers Act allows stockbrokers to sell securities based on suitability reviews.
  5. Mutual Funds & ETFs

    What are the risks involved in keeping my money in a money market account?

    Setting aside funds in a money market account can be a safe investment strategy, but investors should be aware of the risks inherent to money market options.
  6. Mutual Funds & ETFs

    Does it make sense for me to have a money market account if I don't want to buy any securities?

    Saving funds within a money market account or mutual fund does not have to be limited to those wanting to buy or sell securities in the near future.
  7. Mutual Funds & ETFs

    How much of my total assets should I be keeping in my money market account?

    Investing a portion of total assets in a cash position such as a money market account provides investors access to funds in the case of an emergency.
  8. Mutual Funds & ETFs

    Why would you keep funds in a money market account and not a savings account?

    Read about the differences between money market accounts and savings accounts, and see why a depositor would elect a money market over a savings account.
  9. Mutual Funds & ETFs

    What determines the interest rate in my money market account?

    Placing funds in a money market account may provide a higher interest rate than a savings account due to the underlying securities of the money market fund.
  10. Investing Basics

    What is the difference between a REIT and a real estate fund?

    A real estate fund invests in securities offered by public real estate properties directly or indirectly through Real Estate Investment Trusts (REITs).

You May Also Like

Hot Definitions
  1. Treasury Bond - T-Bond

    A marketable, fixed-interest U.S. government debt security with a maturity of more than 10 years. Treasury bonds make interest ...
  2. Weight Of Ice, Snow Or Sleet Insurance

    Financial protection against damage caused to property by winter weather specifically, damage caused if a roof caves in because ...
  3. Weather Insurance

    A type of protection against a financial loss that may be incurred because of rain, snow, storms, wind, fog, undesirable ...
  4. Portfolio Turnover

    A measure of how frequently assets within a fund are bought and sold by the managers. Portfolio turnover is calculated by ...
  5. Commercial Paper

    An unsecured, short-term debt instrument issued by a corporation, typically for the financing of accounts receivable, inventories ...
  6. Federal Funds Rate

    The interest rate at which a depository institution lends funds maintained at the Federal Reserve to another depository institution ...
Trading Center