Biotech giant Gilead Sciences, Inc. (GILD) has gained 16.8% in the past three months compared with the industry’s growth of 7.6%. The stock has also outperformed the sector and the S&P 500.The stock’s performance was hit by pipeline setbacks earlier in the year. Nonetheless, this month, Gilead reported better-than-expected second-quarter results and raised its annual earnings guidance. Revenues increased 5% from the year-ago quarter’s level due to high HIV, oncology and liver disease drug sales. Earnings al ...