Cubist Pharmaceuticals ( CBST) is focused on the research, development and commercialization of pharmaceutical products that address unmet medical needs in the acute care environment. It was recently trading up $2.57, or 7.1%, at $38.99 after hitting a 52-week high of $39.74 earlier in the day. Today's Range: $37.55-$39.74 52-Week Range: $20.81-$39.74 Volume: 4.3 million Cubist has a market cap of $2.2 billion and a short interest ratio of 8.3, and it trades at a P/E of 47.9. Of 15 analysts covering the stock, 11 rate it a buy, and four rate it a hold. TheStreet Ratings' has a B buy rating on Cubist, making it one of the top-rated biotech stocks. Cubist, which was featured this week in " 5 Stocks Poised to Pop on Earnings," announced third-quarter earnings yesterday that beat analyst estimates and raised its revenue expectations for the full year. Select Comfort ( SCSS) develops, manufactures, markets and distributes adjustable-firmness beds and other sleep-related accessory products. It was recently trading up $2.65, or 16.4%, at $18.77 after hitting a 52-week high of $19.40 earlier in the day. Today's Range: $17.64-$19.40 52-Week Range: $6.63-$19.40 Volume: 3.4 million Select Comfort has a market cap of $902 million and a short interest ratio of 5.8, and it trades with a P/E of 19.7. Of nine analysts covering the stock, six rate it a buy, and three rate it a hold. TheStreet Ratings' has a C+ hold rating on Select Comfort. On Wednesday, Select Comfort announced a 63% increase in third-quarter earnings and raised its expectations for the full year.