Priceline.com (PCLN: sentiment, chart, options) is about 5% higher following a bullish boost from Credit Suisse. The analysts raised their rating on PCLN this morning from "neutral" to "outperform," joining the majority of brokerage firms with their bullish opinion. According to Zacks, the stock has garnered 7 "strong buys" and 2 "buys," along with 3 "holds."

Considering the stock's long-term performance, some optimism from analysts is to be expected. PCLN has rallied along support from its 10-month and 20-month moving averages since early 2006. A recent pullback in the shares was contained by the latter of these trendlines, and the security has since moved higher -- creating an attractive entry point for a potential bullish trade.

Today's positive comment from Credit Suisse seems to have shaken loose some of the bearish bettors on PCLN. Considering the heavy levels of pessimism toward the stock, it stands to gain significantly from an unwinding of skepticism. Short interest represents a whopping 26% of the stock's float, and PCLN's Schaeffer's put/call open interest ratio of 1.10 is in the lofty 85th percentile.