The initiation of trading for ArriVent BioPharma Inc's shares at an IPO price of $24.00 is a significant event for the company. It represents the market's initial valuation of the company and provides investors with the first opportunity to buy into the stock. The IPO price can often lead to increased interest and trading volume in the short term, potentially causing price volatility. As the company is now publicly traded, its performance and investor perception will directly influence its stock price.