Quanta Services stock opened at $378.24 on Friday. The company has a current ratio of 1.37, a quick ratio of 1.32 and a debt-to-equity ratio of 0.59. The firm has a 50-day moving average of $387.37 and a 200-day moving average of $327.85. The firm has a market cap of $56.36 billion, a P/E ratio of 58.55, a P/E/G ratio of 2.24 and a beta of 1.10. Quanta Services, Inc. has a 1-year low of $227.08 and a 1-year high of $424.94.