Enterra Energy Trust has been given a warning by the New York Stock Exchange that it isn't in compliance with its listing requirements because its stock price has fallen below $1 (U.S.) for more than a 30-day trading period. In addition, the company's average global market capitalization over a 30-day trading period has fallen below $75-million. "We believe that the current market price of Enterra's units does not fully reflect the underlying value of Enterra," president and chief executive officer Don Klapko said in a news release yesterday. "Our unit price has been pressured by recent volatile market activity that is impacting many companies across many industries." Enterra said it has until June, 2009, to meet the stock-price listing requirements and until May, 2010 to improve its market capitalization. ENT (NYSE) fell 7 cents to 50 cents.