Firms that amass too much money, too fast, can feel compelled to buy companies at rich multiples, driving performance down so far that investors would be better off buying simple, liquid stock-index funds.

FORBES: The Top 50 Dealmakers

Private placements like this one make up less than 10% of the fund, but they can pay about 3 percentage points more than simple and more liquid sovereign debt of the country involved.

FORBES: Riding Out the Russias

These range from simple, but efficient, propane or liquid petroleum gas (LPG), to solar cookers.

FORBES: Cooking with Julia Roberts

In fact provided the rotation of any given index does is not too extreme it makes for a more liquid and active market than simple straight line rallies or corrections.

FORBES: Optional Opportunity

It has the second-biggest reserves after Saudi Arabia in terms of liquid oil reserves, and it has relatively simple geology.

CNN: Oil will shape Iraq's future