Business-to-business manufacturing platform Zetwerk has raised Rs 2,251 crore from 99 anchor investors, including Capital Group, BlackRock, Goldman Sachs and sovereign wealth funds of Norway and Abu Dhabi, ahead of its Rs 5,012-crore initial public offering (IPO) opening on Thursday.The Bengaluru-based company allotted 149.1 million equity shares at Rs 151 apiece, the upper end of its IPO price band of Rs 143-151, according to a stock exchange