Bernanke towers as biggest Fed market mover: study

By Alister Bull

WASHINGTON (Reuters) - The financial market impact of Federal Reserve Chairman Ben Bernanke's remarks has soared since the start of 2007 as he telegraphed crucial shifts in monetary policy, a report on Tuesday showed.

Only second in command Donald Kohn came close, possibly in a deliberate bid by the pair to exert leadership during the country's subprime mortgage crisis, according to a regular "Who Moved Markets" review by Macroeconomic Advisers, an independent economic forecasting company headquartered in St. Louis.

"Bernanke's speeches accounted for over 60 basis points of movements in the two-year Treasury note, which is five times the effect of the next most influential FOMC (Federal Open Market Committee) member," Macroeconomic Advisers said, referring to the Fed's interest-rate setting committee.

They measured the impact of each Fed policy-maker's speech on the two-year Treasury note, starting 15 minutes before the speech and for 1 hour and 45 minutes afterward, to capture how much it moved the yield in either direction.

The survey also monitors the impact of Fed testimonies to Congress, policy statements accompanying interest rate decisions, and the minutes of FOMC meetings which are released with a three week lag after the statement.

The Fed has slashed interest rates 3.25 percentage points since mid-September to 2 percent to shield the economy from a credit crunch sparked by subprime mortgage market losses.

The scale of Bernanke's dominance has skyrocketed compared with 2006, when he was only twice as influential as the next most market-moving member of the FOMC, while Kohn has emerged from almost last place that year.

"It may be that these two heavyweights made a conscious effort to be the ones delivering important changes to the policy message," Macroeconomic Advisers said.