Not even Delta can slow down Wall Street We’re sorry, this service is currently unavailable. Please try again later. Dismiss By David J. Lynch Normal text size Advertisement There is one place in the United States that appears all but immune to the Delta variant of the coronavirus. Wall Street. Over the past month, even as the more infectious strain of the respiratory virus spread faster than gossip in a high school hallway, stocks continued their steady climb. Wall Street just wrapped up its sixth-straight month of gains. Credit:AP COVID-19 cases quadrupled, prompting public health authorities to recommend that vaccinated people resume wearing masks indoors in high-risk areas. Yet, the Dow Jones industrial average closed at a record high five times this month and is up nearly 15 per cent so far this year.