If I'm reading this correctly, the Fed and its member banks had $49 billion of net income through the first nine months of 2018, before remittances to the U.S. Treasury.
https://www.federalreserve.gov/aboutthefed/2018-september-fe...
Very nice showing. If you annualize the Fed's nine-month rate, it's probably slightly ahead of Apple's money-making rate, which is the best in the U.S. corporate sector. (Apple reported $59 billion in net income for the full year ended Sept. 29, 2018.)
Even so, the Fed can't quite crank out profits at an Aramco tempo.