BANK OF AMERICA Corp. reported a $6.78 billion net income in the second quarter of 2018. / BLOOMBERG FILE PHOTO/RON ANTONELLI
NEW YORK - United States consumers are levering up again, and Bank of America Corp. is using that, along with cost cuts, to boost profit. Bank of America’s consumer unit posted its highest earnings in more than eight years in the second quarter, helping the lender top analysts’ estimates. Loans in that business climbed 6.6 percent…