How can global companies like Apple and Google utilize Excel's 'stock data' format for real-time portfolio management?

The integration of real-time stock information in portfolio management has evolved significantly over the years. Initially, investors had to rely on periodic reports or news updates for stock information. With the advent of the internet, information became more readily available, but it was still a manual process to update portfolio data. The introduction of APIs and data feeds allowed for real-time updates, but these were often expensive and required technical expertise. The game-changer came with the integration of real-time stock data in spreadsheet software like Microsoft Excel and Google Sheets. This made real-time data accessible to the average investor, allowing them to make informed decisions based on current market dynamics.

There are several alternatives to Excel's 'stock data' format for managing a portfolio. One could use Google Sheets, which also offers real-time stock data updates. There are also various portfolio management software available in the market such as Quicken, Personal Capital, and SigFig that provide comprehensive tools for tracking and managing your investments. Additionally, many brokerage firms offer their own portfolio management tools that can be used by their clients.