In some cases, the money flow stops because of a dispute over policy.
After his resignation, the money flow to the campaign stopped and Barnes was forced to drop out of the race.
Several factors other than investor behavior, he said, can affect money flows.
"The thing that's driving this is money flows and a good economy," she said.
Government bond funds saw money flow out in December, losing $782 million.
"As for the money flow, that's out of our hands."
An attempt to reach the 3 percent level by increasing the money flow would only encourage inflation.
"The dynamics of current money flows are overwhelming the economic statistics."
"My big thing is money flows, and you'll find that even when the market cracked, people kept buying," he said.
As the engine on the European train, its power to direct money flow is considerable.