通常來說，公開招股的認購會以港幣500萬元的申購金額作為界限。甲組，也就是申購金額（含融資金額）小於或等於500萬，乙組為申購金額（含融資金額）大於500萬。對於申購乙組的投資者來說，最少可中一手。
*需注意：當出現以下情況，有機會出現公開招股的認購與分配結果不會劃分甲乙組：
1. 當公司發行市值低於4億港元時；
2. 某只新股獲得極少的集資額
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