Bulls are cheering today as positive news out of the euro zone has propelled the Dow Jones Industrial Average (DJI - 12,343.23) 215 points, or 1.8%, higher, extending Tuesday's gain. Elsewhere, the CBOE Market Volatility Index (VIX - 23.19) is down 1.5 points, or 6%.

Here are a few noteworthy stats at midday:

1. The equity put/call volume ratio across all nine options exchanges stands at 0.91, with 3.5 million calls crossing the tape so far today, versus 3.3 million puts.
   
   
2. Among the securities with call-heavy activity is Yahoo (YHOO - 15.33), which has tacked on about 1.6% today. Currently, calls make up 94.01% of the Internet giant's intraday option volume.
   
   
3. The put/call volume ratio on the iPath S&P 500 VIX Short-Term Futures ETN (VXX) sits at 0.64, with calls comfortably outnumbering puts.
   
   
4. The Nasdaq shows an advance/decline ratio of 4.67, signaling that the number of upward movers more than quadruples the decliners.
   
   
5. Among the Nasdaq's major advancers is Ulta Salon, Cosmetics, & Fragrance (ULTA - 97.70), which has gained about 11.8% in intraday trading. The beauty products and services provider tagged a new record high of $97.89 after reporting stronger-than-expected first-quarter earnings.
   
   
6. Bullish sentiment declined last week, according to the latest Investors Intelligence survey.