Stocks Hitting 52-Week Lows

MDC Holdings (NYSE:

) shares touched a new 52-week low of $28.56. MDC shares have dropped 10.21% over the past 52 weeks, while the S&P 500 index has gained 20.54% in the same period. Talisman Energy (NYSE:

) shares fell 1.19% to reach a new 52-week low of $10.56. Talisman Energy's PEG ratio is -15.81. ZaZa Energy (NASDAQ:

) tumbled 27.17% to touch a new 52-week low of $0.80 after the company reported a Q2 loss of $0.57 per share, versus a year-ago loss of $0.49 per share. Merrimack Pharmaceuticals (NASDAQ:

) shares reached a new 52-week low of $3.65. Merrimack's trailing-twelve-month profit margin is -181.17%.