Between February 23 and February 27, four new mainboard and four new SME public issues will open for subscription. Clean Max Enviro Energy Solutions' ₹3,100-crore IPO, PNGS Reva Diamond Jewellery's ₹380-crore IPO, Omnitech Engineering's ₹583-crore IPO and Shree Ram Twistex's ₹110.24-crore IPO will hit Dalal Street. SME IPOs of Kiaasa Retail and Mobilise App Lab will also open for subscription.