High Close
A tactic used by stock manipulators they make small trades at high prices during the final minutes of trading to give the impression that the stock did very well.
Investopedia Commentary
Since the closing prices are widely quoted, stock manipulators hope to create a buzz on a particular stock in order to attract investors to the it.
Related Links
The Basics Of Order Entry
Playing The Gap
See also: At-The-Close Order, Closing, Closing Price, Today's High, Today's Low