Investors are buzzing about a generational buying opportunity in stocks. Markets guru John Hussman just dashed their hopes.

• Wall Street veteran Richard Bernstein sees a generational buying opportunity in US stocks.
• Longtime strategist John Hussman dismissed the idea, pointing to historical S&P 500 returns.
• Hussman has previously warned the benchmark index could plunge by 60% to about 1,600 points.

A Wall Street veteran recently hailed a generational buying opportunity for US stock investors – but John Hussman, a longtime strategist and financial historian, poured cold water on the prospect.