TD Ameritrade | 108,208 followers on LinkedIn. At TD Ameritrade we help individual investors pursue their financial goals through our brokerage subsidiaries. For more than 40 years we have been serving individual investors – from the first-time investor to the sophisticated trader, and from the “do-it-yourself” to the “do-it-for-me” investor. We offer a broad range of investment tools and services – all at a great value.