The Fed’s assets and liabilities are reported on Thursday afternoons around 4:30 p.m. in the H.4.1 release. Reuters reports:
The Fed's balance sheet, which is a broad gauge of its lending to the financial system, stood at $3.367 trillion on June 12, compared to $3.357 trillion on June 5. The Fed's holdings of Treasuries rose to $1.906 trillion as of Wednesday, June 12, from $1.898 trillion the previous week. The Fed's overnight direct loans to credit-worthy banks via its discount window averaged $15 million a day during the week versus $8 million a day the previous week. The Fed's ownership of mortgage bonds guaranteed by Fannie Mae, Freddie Mac and the Government National Mortgage Association (Ginnie Mae) stayed about flat at $1.165 trillion. The Fed's holdings of debt issued by Fannie Mae, Freddie Mac and the Federal Home Loan Bank system totaled $70.89 billion, the same as the previous week.