Ambiq Micro Stock Doubles on NYSE Debut After Upsized IPO

Ambiq Micro, a chip designer, saw its stock double on its first day of trading on the NYSE after its IPO raised $96 million by selling 4 million shares. The stock price climbed over 65% to $39.60, exceeding the expected 3.4 million shares. The strong performance is a positive indicator for the company's growth prospects.

Title: Ambiq Micro's Stock Surges on NYSE Debut, Raising $96 Million

Ambiq Micro, an Austin-based chip designer specializing in ultra-low power semiconductors for AI applications, made a strong market debut on the New York Stock Exchange (NYSE) after raising $96 million through its initial public offering (IPO). The company sold 4 million shares at $24 each, surpassing its initial plan to offer 3.4 million shares. On its first day of trading, Ambiq's shares (AMBQ) surged by more than 65%, reaching a high of $47 before settling around $39.60. This performance nearly doubled the company's value, with its market capitalization reaching approximately $656 million [1].

Ambiq's success is built on its innovative semiconductor technology. The company's flagship chip, the Apollo510, combines a central processing unit (CPU) with a graphics processing unit (GPU) capable of running AI models. The CPU is based on Arm Holdings plc's low-power Cortex M55 core design, which includes a technology called Helium that optimizes AI model processing. The company has also integrated advanced security features, such as a physical unclonable function (PUF) to protect against cyberattacks, and SPOT technology that significantly reduces power consumption [2].

Ambiq's market position is substantial, with its chips powering over 270 million devices worldwide. In 2024, the company sold more than 40 million chips and generated $76.1 million in revenue, a 16% increase from the previous year. Despite an adjusted net loss of $28.6 million in 2024, this represents a significant improvement from the $39.2 million loss in 2023 [2].

Looking ahead, Ambiq has ambitious plans to expand beyond battery-powered devices into markets such as vehicles and robots. The company is developing a "broad portfolio" of processors for these systems, including Atomiq, a system-on-chip optimized for AI models [2].

Ambiq's success is bolstered by strong investor backing, including support from major players like Arm Holdings and Kleiner Perkins, which held a 14.8% stake as of last week. The company's impressive market debut and future plans have generated significant investor optimism, reflecting growing interest in AI-focused semiconductor companies [2].

Ambiq's customer base is relatively concentrated. According to the prospectus, the company's largest customer contributed 38% of its revenue in the first quarter of this year, although the identity of this customer was not disclosed. Other significant customers include Garmin and Alphabet, the parent company of Google, as well as another unnamed client [3].

References
[1] https://theoutpost.ai/news-story/arm-backed-ai-chipmaker-ambiq-micro-soars-in-nyse-debut-after-successful-ipo-18437/
[2] https://www.bloomberg.com/news/articles/2025-07-30/arm-backed-chipmaker-ambiq-shares-double-after-96-million-ipo
[3] https://seekingalpha.com/news/4475110-chip-designer-ambiq-micro-stock-doubles-after-upsized-ipo