Not sure I would ever start doing this with my own money, but just came across a post at Lifehacker about kaChing, which lets you do the exact same trades as professional investors. Looks like it is an investment website that you can join, which used to just let you follow the trades of different professionals, but they just changed the site into a brokerage of sorts (although assets remain in your own account). Now you can have them automatically make all the trades that your favorite investing “genius” makes in real time:
kaChing is the best place to find and follow top investing talent. Where you can see at a glance if they’re skilled or lucky. And where you can see every trade they make in real time, so you can make the same trades yourself. Better yet, we can make them for you.
You can pick a “genius”, tell the system to invest just like them, and kaChing accesses your assets and does the work for you. Of course, it looks like they charge a fee (why wouldn’t they, as I guess they are doing you a service of sorts), but if you want to do more investing like your favorite investor, you should check it out. It’s not for me, but it might be for you.