Overall market volume on this Friday the 13th is a very light 8.2million contracts with an hour to go, on track for one of the lightest days of 2010, as most broad averages trade flat and the CBOE VIX sits little-changed at 25.88, about 4 points above where it started the week. Sectors with volume ahead of normal include energy and utilities (ex div volume in SUN and ED) while flow is lightest in health care and Materials sectors.