This week, these ten stocks, all currently earning A’s (“strong buy”) on Portfolio Grader, have the best year-to-date performance. Since the beginning of the year, the Nasdaq 15.3%, the Dow is up 7.7%, and the S&P has increased 13.3%.

Shares of US Airways (NYSE:LCC) have risen 151% since January 1. US Airways Group provides air transportation for passengers and cargo. The stock currently has a trailing PE Ratio of 4.00. For more information, get Portfolio Grader’s complete analysis of LCC stock.

Since January 1, CVR Energy (NYSE:CVI) has climbed 151.3%. CVR Energy engages in refining and marketing transportation fuels in the United States. For more information, get Portfolio Grader’s complete analysis of CVI stock.

Since January 1, the price of Conn’s Inc. (NASDAQ:CONN) has grown 156.8%. Conn’s is a specialty retailer of home appliances and consumer electronics. For more information, get Portfolio Grader’s complete analysis of CONN stock.

Shares of PulteGroup (NYSE:PHM) have leapt 171.4% since January 1. PulteGroup sells and constructs homes, and purchases, develops, and sells residential land and develops active adult communities. For more information, get Portfolio Grader’s complete analysis of PHM stock.

Since January 1, Nam Tai Electronics (NYSE:NTE) has shot up 173.6%. Nam Tai Electronics is an electronics design and manufacturing services provider to original equipment manufacturers. For more information, get Portfolio Grader’s complete analysis of NTE stock.

The price of Lumber Liquidators (NYSE:LL) is up 176.8% since the first of the year. Lumber Liquidators retails hardwood flooring in the United States. For more information, get Portfolio Grader’s complete analysis of LL stock.

Since the first of the year, the price of Santarus (NASDAQ:SNTS) has swelled 215.2%. Santarus, Inc. was incorporated in California in December 1996 and reincorporated in Delaware in July 2002. It is a specialty pharmaceutical company focused on acquiring, developing and commercializing proprietary products that address the needs of patients treated by gastroenterologists and other targeted physicians. For more information, get Portfolio Grader’s complete analysis of SNTS stock.

Since the first of the year, shares of 3D Systems (NYSE:DDD) have soared 218.1%. 3D Systems engages in the design, development, manufacture, marketing, and servicing of 3D printers and related products, print materials, and services. For more information, get Portfolio Grader’s complete analysis of DDD stock.

Since January 1, Regeneron Pharmaceuticals (NASDAQ:REGN) has jumped 224.4%. Regeneron Pharmaceuticals researches, develops and commercializes therapeutics to treat human disorders and conditions. For more information, get Portfolio Grader’s complete analysis of REGN stock.

Pharmacyclics (NASDAQ:PCYC) has risen 312.8% since the first of the year. Pharmacyclics is a pharmaceutical company developing products to improve upon current therapeutic approaches to cancer, atherosclerosis, and retinal disease. For more information, get Portfolio Grader’s complete analysis of PCYC stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.