Biotech has been one of the strongest sectors in 2013 and Biogen (BIIB) kept the trend alive after they reported earnings that beat Wall Street’s estimates. Biogen hit new all-time highs on its strong earnings. It was trending on StockTwits for most of the day too. Biogen is up 75% this year and the company now has a market cap greater than $60 billion. This makes it one of the most valuable biotech companies in the world.