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1. An illegal practice in which an investor with a long position on a security makes a buy order for that security and immediately cancels it without filling the order. Spoofing tends to increase the price of that security as other investors may then issue their own buy orders, which increases the appearance of demand. The first investor then closes his/her long position by selling the security at the new, higher price. Spoofing is a form of market manipulation. See also: Pump and dump.

2. The act of impersonating a person, usually over the Internet, with the intention of gaining access to another's personal or financial information. It is a means of identity theft.


Some market analysts maintain that the increased volatility in stock markets may be the result of an illegal practice known as spoofing, or phantom bids.

To spoof, traders who own shares of a certain stock place an anonymous buy order for a large number of shares of the stock through an electronic communications network (ECN). Then they cancel, or withdraw, the order seconds later.

As soon as the order is placed, however, the price jumps. That's because investors following the market closely enter their own orders to buy what seems to be a hot stock and drive up the price.

When the price rises, the spoofer sells shares at the higher price, and gets out of the market in that stock. Investors who bought what they thought was a hot stock may be left with a substantial loss if the price quickly drops back to its prespoof price.

Spoofing is a variant of the scam known as pump and dump.

References in periodicals archive ?
Satire, spoofs and humourous digs have not only elevated in Bollywood but also on social media and TV commercials.
One rapidly begins to miss the truly inspired spoofs like "Airplane
Other spoof news items included a headline about health and safety laws being scrapped, a headline about Britain no longer listening to the European Union, and one saying that prisoners given life sentences would never be let out of jail.
Jeremy Vine: Condemned for "disgraceful' spoof' Ian Huntley: Spoof led to check calls with police
We ourselves are participating in this competition with our own ipod spoof which is advertising our popular KALASHNIKOV MP3 PLAYER and we are determined to win.
Spoof Master was also the first winner for top-class sprinter Invincible Spirit, who is the first freshman sire to get off the mark in Britain and Ireland.
Possibly best of all, though, is the opening scene, a spoof of The Ring, featuring Pamela Anderson and Jenny McCarthy, perfectly cast as inappropriately dressed Catholic schoolgirls (all cleavage and short skirts) who find themselves menaced by an evil videotape.
But comic Coogan said he planned further one-off specials as the well- loved spoof character.
It s a spoof on the TV industry and its antics are not to be taken too seriously.
was short-lived, but members Sue Schaffner and Carrie Moyer continue to use the acronym, producing and distributing spoofs of Gap, Calvin Klein, and Family Circle ads that focus on lesbian visibility.
Our first attempt at a "commercial" was a hit, thanks to the actors--two of our most senior manufacturing managers in a spoof of the Bartles and Jaymes wine cooler commercials, showing a botched up circuit board and asking employees for quality work.
It's also interesting to see that social networks and e-cards top the list of open rates for spoof messages, indicating to us that users need to be cautious, regardless of the type of messages they receive.