When it comes to buying assets, investors want to know they can buy any asset on any platform. For example, an investor who wants to purchase a share of Apple stock would want to be sure they could do so through their brokerage account, rather than having to search for a different platform that offers the stock. The good news is that most major stocks and assets are available on most major platforms. For example, you can buy stocks from the New York Stock Exchange (NYSE) on most platforms, including Charles Schwab, Fidelity Investments, and TD Ameritrade. You can also buy ETFs and mutual funds from providers like Vanguard and Fidelity on most platforms. However, there are some exceptions. For example, you can't buy individual bonds or bond funds on some platforms—you have to go through a bond broker.