Trading Ahead
A trade transacted from a specialist's account even though there is a public order that offsets the trade.

Investopedia Says:
Trading ahead is a violation of a specialist's negative obligation to New York Stock Exchange customers. By trading from his or her own account rather than letting public orders match one another, the specialist is robbing the public of its opportunity to transact the security.

Related Terms:
Affirmative Obligation
Interpositioning
Negative Obligation
New York Stock Exchange - NYSE
Principal
Specialist
Trade

• Long Hedge
• Long Jelly Roll
• Long Market Value
• Long (or Long Position)
• Long Put
• Long Run
• Long-Run Average Total Cost (LRATC)
• Long-Run Average Total Cost (LRATC)
• Long Run Incremental Cost (LRIC)
• Long Run Incremental Cost (LRIC)
• Long/Short Equity
• Long/Short Fund
• Long Squeeze
• Long Straddle
• Long Term
• Long-Term Assets
• Long-Term Capital Gain Or Loss
• Long-Term Capital Management (LTCM)
• Long-Term Capital Management (LTCM)
• Long-Term Care (LTC) Insurance
• Long-Term Care (LTC) Insurance
• Long-Term Debt
• Long-Term Debt/Capitalization
• Long-Term Equity Anticipation Securities (LEAPS)
• Long-Term Equity Anticipation Securities (LEAPS)