US STOCKS-Wall St higher as earnings boost confidence
* Apple biggest boost to three major indexes
* Gold touches 5-year low; Copper, oil prices fall
* Vivint Solar soars after SunEdison deal
* Indexes up: Dow 0.19 pct, S&P 0.19 pct, Nasdaq 0.27 pct (Updates to early afternoon)
By Tanya Agrawal
July 20 (Reuters) - Wall Street was higher in early afternoon trading on Monday as better-than-expected earnings from big companies overshadowed a fall in commodities.
Shortly after trading began, the tech-heavy Nasdaq composite added to its gains from last week and touched a record for the third straight day as investors shift their focus to earnings from concerns surrounding Greece and China.
Gold prices plunged as much as 4 percent to their lowest in more than five years while copper prices hit their lowest in nearly two weeks. Oil prices fell too on signs of a growing glut in refined products.
The dollar index was up marginally at $97.87. It had earlier hit a three-month high due to expectations of a Federal Reserve rate hike this year. Continuación...