Ambiq raises $110.4 million in upsized IPO, begins NYSE trading

AUSTIN, Texas - Ultra-low-power semiconductor company Ambiq Micro, Inc. completed its initial public offering, raising $110.4 million before expenses by selling 4.6 million shares at $24 each, the company announced Thursday. The stock has shown strong momentum since its debut, with InvestingPro data showing a remarkable ~14% return in its first week of trading, reaching $43.85 per share.

The offering included the full exercise of underwriters’ option to purchase an additional 600,000 shares. Ambiq’s shares began trading on the New York Stock Exchange under the ticker symbol "AMBQ" on Wednesday.

BofA Securities and UBS Investment Bank served as joint lead book-running managers for the offering, with Needham & Company and Stifel acting as joint book-running managers.

Ambiq specializes in ultra-low-power semiconductor solutions for edge artificial intelligence applications. The company’s technology is built on its patented subthreshold power optimized technology (SPOT), which it claims delivers significant improvements in power consumption compared to traditional semiconductor designs.

According to the press release statement, Ambiq’s technology has been used in more than 270 million devices to date. The company’s mission focuses on enabling AI compute capabilities at the edge where power consumption challenges are most severe.

The IPO was conducted through a registration statement that was declared effective by the U.S. Securities and Exchange Commission on July 29, 2025. For detailed financial analysis and additional insights about Ambiq’s performance, investors can access more than 8 exclusive ProTips and comprehensive metrics through InvestingPro.

In other recent news, Ambiq Micro made a notable entrance on the New York Stock Exchange, with its shares surging over 60% on the first day of trading. The company successfully raised $96 million in its initial public offering. Ambiq Micro’s shares opened at $24 and reached a high of 101.8% during the session, closing at $38.53. This closing price values the company at approximately $656.5 million. These developments mark a significant milestone for the Austin, Texas-based chip designer.

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