Investors should be cautiously positioned as the global economy and markets face major uncertainties. The downgrade will be a further headwind to growth and job creation in the U.S.

Investors have to ask themselves two questions. How much can we grow our investments? And, can we afford our mistakes?

We normally think if you're going to lend someone money, you should get some reward for doing this. In Europe, it's a tax!

How long can interest rates stay negative? Think about this. Not only are you lending your money to governments, but you're paying them interest for the privilege of doing so.

Investors should invest on what they know. The biggest mistake is to invest on what they don't know.

As a whole, investors should welcome attempts to safeguard the integrity of markets. You need very clear rules applied to markets.

Investors should be cautiously positioned as the global economy and markets face major uncertainties. The downgrade will be a further headwind to growth and job creation in the U.S.