Some firms may not be receiving its revenues directly from consumers lets say an aerospace company such as Boeing which is most likely under contract by the government and its overseas clients such as airliners. Stocks of these companies may get affected indirectly when there is a decline for new aircraft orders from airline companies due to a decrease in air travel demand at a time when the labor market is being liquidated. The effect would be small but looking at the investment portfolio side, when a huge investment firm has to compensate the loss from its stocks that were heavily affected by the labor decline, it would have to liquidate its winning stocks to offset the losses. Therefore if stocks of Walmart (WMT), McDonald’s (MCD) or Apple (AAPL) were hit heavily then Money Managers might have to liquidate steady going stocks of Boeing (BA) to balance its portfolio. Since investment firms hold huge quantities of a certain security, it is enough to pull the price lower when they liquidate. This in effect can be the single unit in the herd that turned around sending a message for others to follow.