Recent Examples of arbitrageur from the Web
Levine implicated Ivan Boesky, an arbitrageur, who then implicated Martin Siegel (HBS ’71), formerly of Kidder Peabody but then working for Drexel Burnham Lambert.
Stewart’s book brought the reader inside the room of the most private meetings and discussions among the likes of the famed arbitrageur Ivan Boesky and the financier Michael Milken, as well as those prosecuting them, led by Rudy Giuliani.
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Financial Definition of ARBITRAGEUR
What It Is
An arbitrageur is a person who exploits the differences in the price of a given security by simultaneously purchasing and selling that security.
How It Works
For example, if Company XYZ's stock trades at $5 per share on the New York Stock Exchange and the equivalent of $5.05 on the London Stock Exchange, an arbitrageur would purchase the stock for $5 on the NYSE and sell it on the LSE for $5.05, pocketing $0.05 per share. Theoretically, the prices on both exchanges should be the same at all times, but arbitrage opportunities arise when they're not.
Arbitrageurs also try to exploit price differences created by mergers. In some cases, they purchase the shares of companies that are the targets of purchase offers, hoping to pocket the difference between the trading price and the eventual cash payment resulting from the merger. In theory, arbitrage is a riskless activity, but merger arbitrage is not riskless - -there is a chance the merger will not happen, and the price of the target's shares would probably fall in that event.
Why It Matters
Institutions are usually the biggest arbitrageurs -- the large volumes of shares they trade can make millions in profits even if the spread is small (and it usually is just pennies). The transaction costs that would normally eliminate any profit individual investors could hope for are often relatively minimal for institutions.
The main creator of arbitrage opportunity used to be a lack of real-time communication about prices in other markets, but technology has reduced the number of arbitrage opportunities. The relatively few arbitrage opportunities that do exist are elusive and don't last for long -- when people realize that a security is cheaper on one exchange than another, their interest in exploiting the opportunity will drive up the price of the "cheap" security and drive down the price of the "expensive" security until there is no longer a price difference. In a sense, arbitrageurs ensure equilibrium in the markets.
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