Didn't the US market lose nearly 90% of its value after the 1929 stock market crash that lead to the great depression??
The 1929 fall didn't happen overnight but progressively over a few years. Peak of 381 in sept 1929 down to a low of 41 in july 1932.
Not saying that this will happen again this time however predictions of a low may be both premature and optimistic.
