U.S. stocks opened lower at the open Monday.
Oil prices spiked and Iran rumors added to the unease worldwide.
The S&P 500 lost ground fast as investors watched.
Tech stocks dragged the index down due to valuation concerns.
The Dow posted a slight uptick but most shares were flat to lower through midday.
Traders think earnings will indicate whether big tech and consumer stocks can recover in the coming days once volatility eases.