The data is presented in a format showing the total amounts only. If you would like to see the actual progression of the Fed's increase, please click here:
http://traderdannorcini.blogspot.com/2011/02/federal-reserve-system-balances.html
which will take you to a post I prepared a few days ago showing the build over a period of time.
At the start of November of last year, the total amount of Treasuries held in custody was $2.59 trillion. As of today, that number is being reported as $2.62 trillion or an increase of $30 billion.
We know that the Fed has been engaging in the purchase of Treasuries related to the QE2 program since that time frame. Over the same period, the Fed's reported holdings of Treasuries has increased a whopping $319.5 billion or more than TEN TIMES the amount of other foreign Central Banks.
Mr. Bernanke likes to state that the Fed is not monetizing the debt because that would be a permanent situation and according to him, QE is only temporary. My view is that if it quacks like a duck and acts like a duck and looks like a duck, it is a duck. While there may indeed be a semantic difference, the effect is still the same as far as I am concerned. The Fed is seemingly becoming the biggest buyer of Treasuries on the planet.