The stock market hasn't been this sure of itself since President Bill Clinton first took office. Or rather, the VIX, a measure designed to track stock market fear, is at its lowest level in 24 years. While alarmists may view this as a negative — a signal that complacency has made traders vulnerable to an unforeseen shock — many investors simply see it as a byproduct of conditions ideal for stocks to continue edging higher. "At this point I'm not worried about a low VIX," Michael Antonelli, an institutional equity sales trader and managing director at Robert W.