[1]https://wallstreetonparade.com/2022/03/deutsche-bank-has-lost-38-per
   cent-of-its-market-value-in-a-month-thats-a-big-problem-for-wall-street
   -and-the-fed/
   Deutsche Bank (symbol DB on the above chart) closed at $16.50 on the
   New York Stock Exchange on February 10 of this year. It closed at
   $10.23 yesterday – a decline of 38 percent in a month’s time. That’s a
   big problem because Deutsche Bank is heavily interconnected to Wall
   Street banks via derivatives. According to Deutsche Bank’s most recent
   annual report, as of December 31, 2020, it held $35.4 trillion in
   notional derivatives. (Notional means face amount. See the table on
   page 147 of the 2020 Deutsche Bank Annual Report [2]here.)

References

   1. https://wallstreetonparade.com/2022/03/deutsche-bank-has-lost-38-percent-of-its-market-value-in-a-month-thats-a-big-problem-for-wall-street-and-the-fed/
   2. https://investor-relations.db.com/files/documents/annual-reports/Annual_Report_2020.pdf?language_id=1