GROUP LIFTS AIRLEASE <FLY> STAKE TO 15.1 PCT A group of firms led by PS Group Inc <PSG> said it increased its stake in Airlease Ltd depositary units representing limited partners interest to 700,400 units, or 15.1 pct of the total outstanding, from a previous figure of approximately 651,000 units, or 14 pct. In a filing with the Securities and Exchange Commission, the group said it bought 49,400 Airlease units between July 16 andf October 15 at 17.23 dlrs to 17.60 dlrs a share. No reason was given for the recent purchases.