Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer or Stephanie Link. One out of the three major indices are trading lower today with the Dow Jones Industrial Average ( ^DJI) trading up 22 points (0.1%) at 15,897 as of Wednesday, Dec. 18, 2013, 11:55 AM ET. The NYSE advances/declines ratio sits at 1,497 issues advancing vs. 1,411 declining with 169 unchanged. The Transportation industry currently is unchanged today versus the S&P 500, which is unchanged. On the negative front, top decliners within the industry include Costamare ( CMRE), down 4.5%, and Delta Air Lines ( DAL), down 1.1%. TheStreet would like to highlight 4 stocks pushing the industry higher today: 4. Spirit Airlines ( SAVE) is one of the companies pushing the Transportation industry higher today. As of noon trading, Spirit Airlines is up $0.72 (1.7%) to $43.64 on light volume. Thus far, 236,761 shares of Spirit Airlines exchanged hands as compared to its average daily volume of 825,500 shares. The stock has ranged in price between $42.88-$43.81 after having opened the day at $42.88 as compared to the previous trading day's close of $42.92. Spirit Airlines, Inc. provides low-fare airline services. It operates approximately 200 daily flights to 50 destinations in the United States, Latin America, and the Caribbean. Spirit Airlines has a market cap of $3.1 billion and is part of the services sector. The company has a P/E ratio of 20.6, above the S&P 500 P/E ratio of 17.7. Shares are up 143.9% year to date as of the close of trading on Tuesday. Currently there are 5 analysts that rate Spirit Airlines a buy, no analysts rate it a sell, and none rate it a hold. TheStreet Ratings rates Spirit Airlines as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures, impressive record of earnings per share growth, compelling growth in net income and good cash flow from operations. We feel these strengths outweigh the fact that the company shows low profit margins. Get the full Spirit Airlines Ratings Report now. 3x UPSIDE POTENTIAL: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12-months. Learn more.