I wrote a concise, $5 book summarizing this site. You can buy it here. I track all of my investments with Personal Capital.
The #1 Website I Use to Achieve Financial Independence Faster
I have investment accounts all over the place. To keep track of all of them in one place I use Personal Capital. It combines all of my accounts, shows me where I may be overpaying in fees, and provides beautiful charts showing my overall asset allocation and performance.
I use Personal Capital to track my Roth and Traditional TSP, Vanguard IRAs, banking accounts, SDP, and my Betterment taxable account, all in one place. It's free, secure and presents me with a one-stop dashboard so I can see all my money on one site.
Read my full review of Personal Capital and see how easy it can be to manage your investments in one place. Trust me, once you try it, you'll love it.
P.S. - If you have over $100,000 of assets and a 401k, you really need to run the Personal Capital 401k Fee Analyzer.