BOK Financial Corp : BOK financial reports quarterly earnings of $66 million . Q2 earnings per share $1.00 . Q2 earnings per share view $0.99 -- Thomson Reuters I/B/E/S . Q2 fees and commissions revenue was $183.5 million . Stability in commodity price environment translated into lower credit costs for quarter . Stability in commodity price environment translated into reduced concern about spillover impact on economies in energy states . Net interest revenue totaled $182.6 million for Q2 of 2016, unchanged compared to Q1 of 2016 . Net interest margin was 2.63 percent for Q2 of 2016, compared to 2.65 percent for Q1 . Combined allowance for credit losses totaled $252 million at June 30 compared to $240 million or 1.50 percent of outstanding loans at March 31 . Nonperforming energy loans increased $8.6 million during Q2 . Recorded $20.0 million provision for credit losses during Q2 versus $35.0 million provision for credit losses in previous quarter . Company completed an energy loan portfolio redetermination during Q2 ."We recognize that macroeconomic factors may result in additional pressure on commodity prices".