Interest in Moody’s (MCO) puts continues. Open interest increased from 79.1K on July 20 to 152.4K today, or 92.7 percent (chart). Open interest in Moody’s puts increased by 19K contracts in the most recent session, compared to a decline of 166 in MCO calls. Shares fell yesterday and are are down $1 to $24.52 today after the company reported (wednesday a.m.) better than expected earnings and revenues, but issued downside guidance for the fiscal year. Another 13K puts traded today, compared to 1,450 calls. While some of the trades are likely closing, ISEE data indicate 45 percent opening customer buyers. Implied volatility is up as well, to 53, from about 51 the day before.