[Data: The Fed’s balance sheet expanded again by more than $40 billion]

According to the latest data from the Federal Reserve's official website, as of March 21, the size of the Fed's balance sheet was US$8.733 trillion, an increase of approximately US$43 billion from US$8.69 trillion on March 15.

As previously reported, on March 17, the Fed’s balance sheet jumped from $8.39 trillion on March 8 to $8.69 trillion on March 15, the highest level since November last year.