Mixed signals on tech stocks amid debate over viability of AI boom

Fears of fresh sell-off after Nvidia and Microsoft shares dip, but other chip stocks continue to rise

Investors are sending mixed signals regarding their appetite for tech stocks, as the growing debate over the artificial intelligence boom, and a US clampdown on chip exports to China, raise questions over the direction of growth for key companies.

There were fears of a fresh sell-off after the US-listed shares in the chip maker Nvidia dropped 7% overnight, amid concerns that excitement over companies at the forefront of artificial intelligence development had been overblown.