CBOE Volatility Index (.VIX) is up .68 to 25.57 and heading to session lows, as the S&P 500 falls 9 points and its worse levels of the day. The catalyst for the decline isn’t obvious, but some of the cylical names — HD, CAT, AA — are the biggest losers in the Dow on the heels of today’s disappointing existing home sales numbers (5.66 mln in May vs. 6.1 mln consensus).