This week, 15 stocks get A’s (“strong buy”) in Portfolio Grader‘s three main grading categories, Total Grade, Overall Fundamental Grade, and Quantitative Grade.

These are the best of the best in the entire Portfolio Grader database. This week, there are 4,208 stocks and only these 15 get top marks in all categories to make the elite “Triple A” stocks list. Here they are:

Arch Capital Group (NASDAQ:ACGL) writes insurance and reinsurance on a worldwide basis. ACGL is up 11.1% since January 1. The stock has a trailing PE Ratio of 8.5. For more information, get Portfolio Grader’s complete analysis of ACGL stock.

Aspen Insurance Holdings (NYSE:AHL) provides insurance and reinsurance solutions worldwide. The price of AHL is up 15.5% since the first of the year. This is better than the S&P 500, which has seen a 16.1% increase over the same period. For more information, get Portfolio Grader’s complete analysis of AHL stock.

Air Methods (NASDAQ:AIRM) provides air medical emergency transport services and systems in the United States. AIRM is 38.4% higher since the beginning of the year. For more information, get Portfolio Grader’s complete analysis of AIRM stock.

magicJack (NASDAQ:CALL) provides voice over Internet protocol services over various platforms. Since the start of the year, CALL has soared 90.1%. For more information, get Portfolio Grader’s complete analysis of CALL stock.

Calumet Specialty Products (NASDAQ:CLMT) produces hydrocarbon products in North America. Stock prices have risen 48.8% since the first of the year. The stock has a dividend yield of 2.4%. The stock’s trailing PE Ratio is 9.5. For more information, get Portfolio Grader’s complete analysis of CLMT stock.

Cooper Tire & Rubber (NYSE:CTB) produces and markets tires for passenger vehicles, light trucks, medium trucks, motorsports, and motorcycles that are sold in the replacement tire market. Since January 1, CTB has risen 57%. The stock has a trailing PE Ratio of 4.7. For more information, get Portfolio Grader’s complete analysis of CTB stock.

D.R. Horton (NYSE:DHI) builds and sells homes in the United States, as well as provides mortgage financing and title agency services to homebuyers. Since January 1, DHI has jumped 76%. The stock’s trailing PE Ratio is 8.7. For more information, get Portfolio Grader’s complete analysis of DHI stock.

Francesca’s Holdings Corp. (NASDAQ:FRAN) is a womens clothing boutique specializing in trendy clothes, handbags, shoes, jewelry, & gifts. For more information, get Portfolio Grader’s complete analysis of FRAN stock.

Lumber Liquidators (NYSE:LL) retails hardwood flooring in the United States. Shares of LL have climbed 193.6% since January 1. For more information, get Portfolio Grader’s complete analysis of LL stock.

Liquidity Services (NASDAQ:LQDT) provides full service solutions to market and sell surplus assets and wholesale goods. Since the start of the year, LQDT has increased 50.5%. For more information, get Portfolio Grader’s complete analysis of LQDT stock.

Mellanox Technologies (NASDAQ:MLNX) designs and develops semiconductor-based, high-performance interconnect products. Shares of the stock have risen 230% since January 1. For more information, get Portfolio Grader’s complete analysis of MLNX stock.

Par Pharmaceutical (NYSE:PRX) develops, manufactures, and distributes generic and branded pharmaceuticals in the United States. The price of PRX is up 52.6% since the first of the year. For more information, get Portfolio Grader’s complete analysis of PRX stock.

Smith & Wesson (NASDAQ:SWHC) provides products and services for safety, security, protection, and sport. Since the start of the year, SWHC has soared 153.9%. For more information, get Portfolio Grader’s complete analysis of SWHC stock.

Syntel (NASDAQ:SYNT) provides strategic Information Technology/Business Process Outsourcing solutions to Global 2000 companies. The price of SYNT is up 32.4% since the first of the year. For more information, get Portfolio Grader’s complete analysis of SYNT stock.

Taro Pharmaceutical (NYSE:TARO) is engaged in developing, manufacturing, and marketing prescription and over-the-counter pharmaceutical products, as well as active pharmaceutical ingredients in the United States, Canada and Israel. The stock has a trailing PE Ratio of 9.9. For more information, get Portfolio Grader’s complete analysis of TARO 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.