Deutsche Bank shares fell to a record low Monday, yet debt investors are not panicking and a key measure of the German bank’s funding costs has improved in the past week.

Frankfurt-traded shares of Germany’s biggest lender by assets fell as low as €5.80 ($6.48), down more than 20% over the past month. They recovered slightly but still closed below €6.00 for the first time: On Tuesday morning they were at €6.05.