Editor's Note: TheStreet ratings do not represent the views of TheStreet's staff or its contributors. Ratings are established by computer based on metrics for performance (which includes growth, stock performance, efficiency and valuation) and risk (volatility and solvency). Companies with poor cash flow or high debt levels tend to earn lower ratings in our model All three major indices are trading up today with the Dow Jones Industrial Average ( ^DJI) trading up 79 points (0.5%) at 15,295 as of Wednesday, May 15, 2013, 12:45 PM ET. The NYSE advances/declines ratio sits at 1,703 issues advancing vs. 1,237 declining with 128 unchanged. The Services sector currently sits up 0.6% versus the S&P 500, which is up 0.6%. A company within the sector that fell today was Computer Sciences Corporation ( CSC), up 10.28. Top gainers within the sector include Liberty Media Corporation ( LMCA), up 17.6%, United Continental Holdings ( UAL), up 4.0%, Delta Air Lines ( DAL), up 4.1%, Netflix ( NFLX), up 4.0% and Sirius XM Radio ( SIRI), up 4.1%. TheStreet Ratings group would like to highlight 3 stocks pushing the sector lower today: 3. LATAM Airlines Group S.A ( LFL) is one of the companies pushing the Services sector lower today. As of noon trading, LATAM Airlines Group S.A is down $0.30 (-1.5%) to $19.70 on average volume Thus far, 198,222 shares of LATAM Airlines Group S.A exchanged hands as compared to its average daily volume of 432,500 shares. The stock has ranged in price between $19.66-$20.30 after having opened the day at $20.00 as compared to the previous trading day's close of $20.00. LATAM Airlines Group S.A., together with its subsidiaries, provides passenger and cargo air transportation services primarily in South America. LATAM Airlines Group S.A has a market cap of $9.9 billion and is part of the transportation industry. The company has a P/E ratio of 672.3, above the S&P 500 P/E ratio of 17.7. Shares are down 15.1% year to date as of the close of trading on Tuesday. TheStreet Ratings rates LATAM Airlines Group S.A as a hold. Among the primary strengths of the company is its robust revenue growth -- not just in the most recent periods but in previous quarters as well. At the same time, however, we also find weaknesses including a generally disappointing performance in the stock itself, disappointing return on equity and feeble growth in the company's earnings per share. Get the full LATAM Airlines Group S.A Ratings Report now. Exclusive Offer: Jim Cramer's 'go-to' small/mid-cap guru Bryan Ashenberg only buys stocks he thinks could return 50-100%. See his top picks for 14-days FREE.