Ambiq Micro shares surge 59.18% intraday after a successful upsized IPO.

Ambiq Micro, Inc. surged 59.18% intraday, with the company's shares rising significantly following its upsized IPO on the New York Stock Exchange. The stock was priced at $24 per share, raising $96 million. The IPO was upsized from an initial plan to offer 3.4 million shares for $22 to $25 each, to 4 million shares. The company's focus on ultra-low-power semiconductor technology and its backing by Arm Holdings contributed to the positive market sentiment.