India, Aug. 5 -- Stocks initially extended yesterday's rally in early trading on Tuesday but have given back ground over the course of the session. The major averages have pulled back well off their highs of the session and into negative territory.

Currently, the major averages are off their lows of the session but still in the red. The Dow is down 143.42 points or 0.3 percent at 44,030.22, the Nasdaq is down 83.34 points or 0.4 percent at 20,970.24 and the S&P 500 is down 27.46 points or 0.4 percent at 6,302.48.

The downturn on Wall Street may partly reflect ongoing trade concerns following President Donald Trump's latest comments on tariffs.

In an interview on CNBC's "Squawk Box," Trump said he will be announcing new tariffs on semicon...