Tokyo stocks opened notably lower Friday tracking heavy losses on Wall Street overnight which saw the S&P 500 and the Dow industrials suffering their worst daily percentage drops in about six weeks as tech shares' losses deepened.

As of 9:15 a.m., the 225-issue Nikkei Stock Average fell 213.26 points, or 1.05 percent, from Thursday to 20,007.04.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, lost 13.78 points, or 0.85 percent, to 1,610.29.

Precision instrument, food and electric appliance-linked issues comprised those that declined the most in early trade.