OptiSigns' US Market Index app provides real-time updates on general market prices, and enables you to display the S&P 500, Dow Jones Industrial Average, and NASDAQ indices on your digital signs. This feature allows you to stay informed about the latest market trends and insights, and make informed decisions for your business. With the US Market Index app, you can easily customize and manage your market index displays, ensuring that your audience receives the most relevant and engaging information. The data is updated every 15 minutes, providing you with up-to-date information on the stock market. With OptiSigns, you can enhance your brand's visual identity and create a dynamic viewing experience for your viewers.