Shares rose 0.67% to C$77.77 on Wednesday, topping the previous C$77.29 peak set on 5 May.
The gain came as Canada's S&P/TSX Composite Index climbed 1.24% to 33,981.82 in a broadly positive market session.
Despite the record high, Power Corp. shares underperformed the wider market, while trading volume of 1.0 million stayed below the 50-day average of 2.8 million.
With its stock at a new peak, why do valuation models suggest Power Corp. is now significantly overvalued?
As tech giants get a 'diversification premium,' why is financial conglomerate Power Corp. still stuck with a 27% discount?