Tuesday, October 21st is another busy day for earnings reports. The Coca-Cola Company will post third quarter results before the markets open. The soda maker is expected to see its volume growth decrease in emerging countries due to the sugar tax that was imposed in Mexico, the biggest consumer of its products. Fast food chain McDonald's and motorcycle company Harley-Davidson are also expected to post third quarter results Tuesday morning. Also, we watch for Yahoo! earnings after market close. The Alibaba investment has brought in considerable returns to the company. It's a quiet day on the economic calendar with just one key number to watch for. TheStreet's Kurumi Fukushima has details from New York.