S&P 500 Index opens with small losses below 3,500

• S&P 500 continues to stay calm near 3,500.
• Energy shares post heavy losses in early trade on Tuesday.
• Rising tech shares continue to post Nasdaq Composite. 

Wall Street's main indexes started the first day of September on a mixed note amid a lack of significant fundamental drivers. As of writing, the S&P 500 Index was posting small daily losses at 3,499, the Dow Jones Industrial Average was down 0.28% at 28,347 and the Nasdaq Composite was up 0.53% at 12,177.

Among the 11 major S&P 500 sectors, the Energy Index is down 1.4% as the worst-performer. On the other hand, the Technology Index is gaining 0.5%, helping the tech-sensitive Nasdaq preserve its bullish momentum.

Earlier in the day, White House Chief of Staff Mark Meadows told CNBC that the Senate GOP is looking at a $500 billion COVID-19 aid bill and added that he expects Republicans to bring is up next week. Nevertheless, these comments don't seem to be having a significant impact on market sentiment.

S&P 500 chart (daily)