"It is getting increasingly difficult to just invest in companies you believe in." So, let's say that Mark's right and the combination of HFT and emphasis on m

"It is getting increasingly difficult to just invest in companies you believe in." So, let's say that Mark's right and the combination of HFT and emphasis on macro trends has caused some securities to be mis-priced compared to his analysis of their long-term prognoses. As a long-term investor, shouldn't he be delighted for the opportunity to bargain shop? If anyone can stay solvent longer than markets stay irrational, it's him.