@Gonu Your question raises some suspicion, read your response in one of your posts :
"Allied blender mai 320 listings price par hi total sell kar diya bro mai listing gain lekar nikal jata hu"
If listing gains are only target, question about holding or selling become invalid. Nahin?
Also, you apply for IPOs with your brother (currently as many as 64 applications as per your claim), you should also check with your brother and also take into considerations what others (for whom you apply) want.
Good Luck 👍