noun
publicly offered shares; publicly subscribed stock
Financial term for shares offered to the general public, typically in an IPO or public offering.
その会社は公募株を発行して資金を調達した。
The company raised funds by issuing publicly offered shares.
株式 is the general term for 'stock' or 'shares'; 公募株 is a specific type of stock offered to the public.
Compound of 公募 (こうぼ, 'public offering') and 株 (かぶ, 'stock, share').