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For the Texas Ratio calculation, a bank's available capital is the sum total of its equity capital and its loan loss reserves. Equity capital is essentially the book value of the bank -- its total assets minus its liabilities.
Step 3: Now calculate. 1  the average of the Excess return. 2  the Standard Deviation of the Exess Return. 3  Finally calculate the Sharpe Ratio by dividing the average of the Exess Return by its Standard Deviation (in my example this would be =D18/D19)