Tier 1 capital to total assets
Hidden bank reserves (according to section 340 f of the German Commercial Code) to total assets
Dummy variable that takes one if hidden bank reserves are reduced
Customer loans to total assets
HHI measuring concentration in the loan portfolio (calculated from 23 industry sectors)
Dummy variable that takes one for banks with avoided write-offs on its balance sheets
Fee income to total income
Operative result to equity capital
Non-performing loans to total assets
Off-balance sheet positions to total assets