Business Insider: Yahoo stock sank to a new 52-week low on Thursday, as worries about its Asian assets continue to weigh on the stock. Shares of Yahoo fell to $28.85 in midday trading on Thursday, amid a broader market selloff in which the Dow Jones Industrial Average fell 200 points. While just about all tech stocks got whacked in Thursday’s down market, the selloff took Yahoo’s stock to a new low. Yahoo is struggling to boost its revenue and traffic, three years into a turnaround effort led by CEO Marissa Mayer.