In April, the average or effective federal funds rate, or what banks charge each other to borrow reserves overnight, was only 5 basis points below the top end of the US central bank’s target range, which was 1.50-1.75 per cent at the time.
This sparked worries among some traders whether the fed funds rate would rise above the top of the target range and possibly rattle market confidence in the Fed’s ability to control short-term rates.
To address this fed fund rate rise, the Fed made a technical adjustment to the interest it pays on bank reserves at its June policy, raising it by 20 basis points while increasing the target range by 25 basis points, Potter noted.