City Therapeutics surges in market debut after upsizing $200M IPO

City Therapeutics Inc (NASDAQ:CTY) experienced a robust market debut on Friday, with the company's stock surging 28% following an upsized initial public offering that raised $200 million. Founded in Cambridge, Massachusetts, City Therapeutics sold 11.11 million shares at $18.00 each, matching the midpoint of its expected range. The decision to expand the offering to 11.11 million shares from an initial plan of 9.72 million shares suggests strong investor confidence in the biotechnology firm.

Trading commenced at $23.00 under the ticker symbol CTY, catapulting the company's valuation to approximately $1.19 billion based on total outstanding shares. The offering was led by prominent healthcare investors Arch Venture Partners and Fidelity Management & Research, demonstrating the robust institutional demand for early-stage RNA interference developers.

City Therapeutics granted underwriters a 30-day option to purchase up to an additional 1.67 million shares at the IPO price, providing additional liquidity to the company. The capital raised from the IPO will be utilized to further develop the company's proprietary RNAi platform and its lead therapeutic pipelines, including CITY-FXI for thromboembolic conditions, CITY-RBP4 for Stargardt disease, and CITY-TFR2 for chronic disease-associated anemia.

The debut highlights the growing investor interest in platform-based genetic medicine developers capable of tissue-selective drug delivery. With this capital influx, City Therapeutics now possesses a significant runway to advance its clinical programs toward pivotal milestone readouts.