Other common names for market timing include opportunistic investing, sector rotation, active asset allocation, top-down allocation, bottom-up allocation, global modeling, algorithmic positioning, defensive investing, and the list goes on.

FORBES: Anything But Market Timing

Armed with index funds and strategies like sector rotation, relative value and tactical asset allocation, these advisers all attempt to earn their keep by beating benchmarks net of fees.

FORBES: A Magical Tax-Loss Harvesting Machine?

Several studies of mutual fund rotation points to investor bias when selecting an asset class.

FORBES: Investment Principle Matters to Principal