Century Aluminum Co (NASDAQ:

) shares reached a new 52-week high of $16.81. Century Aluminum shares have jumped 69.75% over the past 52 weeks, while the S&P 500 index has gained 18.85% in the same period. Lam Research (NASDAQ:

) shares reached a new 52-week high of $71.10. Lam Research's PEG ratio is 0.47. Alcoa (NYSE:

) shares touched a new 52-week high of $15.40 after the company reported stronger-than-expected fiscal second-quarter results. Principal Financial Group (NYSE:

) shares touched a new 52-week high of $51.85. Principal Financial's trailing-twelve-month revenue is $9.60 billion.