Chip designer Ambiq Micro on Thursday reported a 16.1 per cent rise in 2024 net sales in its filing for a U.S. initial public offering, as growing demand for generative AI fuels spending on semiconductor technology. Strong investor demand for AI-focused tech stocks is helping revive the IPO market, as investors warm again to high-growth tech startups they had largely avoided for nearly three years. The Austin, Texas-based company disclosed a net loss of $39.7 million in 2024, narrowing from a