Trading activity at New York Stock Exchange in the 1920s

In the days leading up to Black Tuesday, despite efforts by financiers like Rockefeller and JP Morgan, investors rushed to sell their securities at any price. The panic, which had begun four days earlier, culminated in a massive market crash. Stock prices plummeted, and even the most secure investments became nearly worthless. In the final hour, millions of shares flooded the market, marking the inevitable crash.

Describe the state of the stock prices during the last hour of Black Tuesday.

What was the outcome of the panic as described in the text?