TOKYO, March 20 (Xinhua) -- Tokyo stocks lost ground Tuesday morning as technology shares dragged down the broader market following their U.S. counterparts falling overnight on Wall Street on concerns stiffer regulations will be applied to large technology companies.

The 225-issue Nikkei Stock Average dropped 211.97 points, or 0.99 percent, from Monday to 21,268.93.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, lost 13.37 points, or 0.78 percent, at 1,706.60.

Precision instrument, electric appliance and mining-linked issues comprise those that declined the most by the morning break.