The S&P 500 rose 0.41% to 1,774.90 in afternoon trading Wednesday.
The Dow Jones Industrial Average was up 0.13% to 15,770.56, while the Nasdaq was up 0.70% to 3,947.42.
The yield on a 10-year Treasury bond fell 1.48% to 2.73%.
The price of gold slipped 0.23% to $1,268.30 per ounce.
Huntington Beach-based Quiksilver Inc. was up about 5% to $9.12. The action sports retail and apparel maker had a recent market value of $1.53 billion. Credit Suisse reiterated its “outperform” rating on the company's stock following a Tuesday meeting with Quiksilver Chief Executive Andy Mooney and Chief Financial Officer Richard Shields.
Shares of Newport Beach-based Clean Energy Fuels Corp. were up about 5% to $12.20 for a market value of $1.09 billion. The company said Wednesday that it struck a multi-year, liquefied natural gas deal to supply two United Parcel Service Inc. stations in Texas. It said it would open three natural gas stations in Texas in a separate deal with UPS.
Lake Forest-based Quantum Fuel Systems Technologies Worldwide Inc. surged about 30% to $6.51 for a market value of $97.36 million. The company reported growth in third-quarter revenue and narrowed its net loss during the period. It also said revenue from its compressed natural gas business more than doubled from the year-ago period.
Irvine-based TRI Pointe Homes Inc. shares rose about 8% to $18.24 following better-than-expected third-quarter results, which were released before market open Wednesday. TRI Pointe had a recent market value of $576.33 million.