As many as six new IPOs will open for subscription next week. These include three mainboard IPOs of Mamata Machinery Limited (₹179 crore), Transrail Lighting Limited (₹400 crore) and Ventive Hospitality Limited (₹1,600 crore). SME IPOs of NACDAC Infrastructure Limited (₹10 crore), Identical Brains Studios Limited (₹20 crore) and Newmalayalam Steel Limited (₹42 crore) will also open this week.