Classify the given a piece of financial news into three classes: positive, negative, and neutral. Output must be 'positive', 'negative', or 'neutral'.
Q: The liquidity providing was interrupted on May 11 , 2007 when Aspocomp Group Oyj 's shares traded below 0.50 cent ( Aspocomp 's stock exchange release 11.5.2007 ) .
A:
negative