noun
trading below IPO price; falling below public offering price
Financial term used when a newly listed stock trades below its initial public offering (IPO) price during the flotation period.
新規上場銘柄が公募割れを起こした。
The newly listed stock fell below its IPO price.
公募割れが続くと、投資家の信頼を損なう。
If trading below the offering price continues, it damages investor confidence.
初値 is the first traded price after listing; 公募割れ occurs when this or subsequent prices fall below the offering price.
Compound of 公募 (public offering) and 割れ (breaking, falling below). The term likely emerged with modern stock market practices.