U.S. stocks opened lower in early trade Monday.
Oil prices spiked and Iran rumors added to the concern across markets.
The S&P 500 lost ground fast while traders reacted.
Tech stocks dragged the index down due to valuation concerns.
The Dow posted a slight uptick but most shares stayed flat or lower by noon.
Traders think earnings will reveal whether big tech and consumer stocks can rebound before week’s end if buying pressure returns.