Cemex (CX) is off 24 cents to $10.57 and 19K calls traded on the Mexican cement company so far. The focus is on the October 11 calls. 15000 contracts traded and much of the activity has been on the ISE, where sentiment data indicate that 96 percent, or about 11K calls, have been bought-to-open so far. Implied volatility is up about 7 percent to 42. No news on the stock today, but the overall flow seems to reflect bullish sentiment and expectations for a reversal of today’s losses, and more, by the October expiration.