With the tried-and-true strategy being called into question, these investors have sought diversification elsewhere.

Learn more about whether Cummins Inc. or Xylem Inc. is a better investment based on AAII's A+ Investor grades, which compare both companies' key financial metrics.

Learn more about whether Cummins Inc. or Pentair plc is a better investment based on AAII's A+ Investor grades, which compare both companies' key financial metrics.

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It depends on the day. As the two most-traded currencies on the planet, the U.S. Dollar and Euro always rank highly. But they’re far from the most valuable out there right now. Hint: It usually helps ...