They further dissect the tick data to detect foot prints of smart money and calculate net buying or selling by smart money.

FORBES: Money Flows Out Of Apple And Into BlackBerry

If the Fed prints too much money, the result is higher prices (or if companies can't raise prices, then a shrinking of their profit margins).

FORBES: Fact and Comment

Historically, commodity prices, particularly gold, have been instant indicators when a central bank prints too much money (commodity prices uniformly zoom up) or too little (commodity prices generally fall).

FORBES: Fact and Comment