Top 10 Best-Performing Mid-Cap Stocks Year-to-Date: VRUS, GLBC, VHI, GLNG, LVLT, MPEL, ELN, IPGP, WTW, ULTA (Jul 23, 2011)

Pharmasset, Inc. (NASDAQ:VRUS) is the 1st best-performing stock year-to-date in this segment of the market. It has risen 214.44% since the beginning of this year. Its price percentage change was 437.77% for the last 52 weeks.Global Crossing Ltd. (NASDAQ:GLBC) is the 2nd best-performing stock year-to-date in this segment of the market. It has risen 197.68% since the beginning of this year. Its price percentage change was 243.70% for the last 52 weeks. Valhi, Inc. (NYSE:VHI) is the 3rd best-performing stock year-to-date in this segment of the market. It has risen 183.76% since the beginning of this year. Its price percentage change was 300.13% for the last 52 weeks. Golar LNG Limited (USA) (NASDAQ:GLNG) is the 4th best-performing stock year-to-date in this segment of the market. It has risen 162.23% since the beginning of this year. Its price percentage change was 294.23% for the last 52 weeks. Level 3 Communications, Inc. (NASDAQ:LVLT) is the 5th best-performing stock year-to-date in this segment of the market. It has risen 147.96% since the beginning of this year. Its price percentage change was 120.91% for the last 52 weeks.

Melco Crown Entertainment Ltd (ADR) (NASDAQ:MPEL) is the 6th best-performing stock year-to-date in this segment of the market. It has risen 147.33% since the beginning of this year. Its price percentage change was 279.95% for the last 52 weeks. Elan Corporation, plc (ADR) (NYSE:ELN) is the 7th best-performing stock year-to-date in this segment of the market. It has risen 115.36% since the beginning of this year. Its price percentage change was 149.80% for the last 52 weeks. IPG Photonics Corporation (NASDAQ:IPGP) is the 8th best-performing stock year-to-date in this segment of the market. It has risen 111.57% since the beginning of this year. Its price percentage change was 332.17% for the last 52 weeks. Weight Watchers International, Inc. (NYSE:WTW) is the 9th best-performing stock year-to-date in this segment of the market. It has risen 111.47% since the beginning of this year. Its price percentage change was 202.13% for the last 52 weeks. Ulta Salon, Cosmetics & Fragrance, Inc. (NASDAQ:ULTA) is the 10th best-performing stock year-to-date in this segment of the market. It has risen 94.18% since the beginning of this year. Its price percentage change was 173.71% for the last 52 weeks.