New Delhi, Sept. 24 -- Domestic tech stocks extended their losing run to the fourth straight session on Wednesday, with names such as Coforge, Wipro, and Tech Mahindra falling over 2.5%, pushing the Nifty IT index down by 1.11% to a day's low of 34,587, causing it to lose a cumulative 5% over the last four trading sessions.

The IT stocks, which had taken a breather in recent weeks, failed to sustain those rallies as sentiment turned cautious after the White House increased the fee for new H-1B visas to USD 100,000 from USD 1,000, threatening higher costs and potential delays in deploying skilled workers to the US.

India's $283 billion IT sector, which earns about 57% of its revenue from the U.S., has long benefited from U.S. work visa p...