Shares of E2E Networks, Hitachi Energy India, MTAR Technologies and other artificial intelligence (AI)-related companies fell by up to 5 percent on Friday, tracking a global sell-off in technology stocks amid concerns over rising spending on AI infrastructure and returns from such investments. Investors are also worried about rising borrowing costs as companies take on billions of dollars in debt to fund their AI expansion plans, while earnings growth has failed to match the scale of investments.