Why did I receive a message regarding CME exchange fee credits?

Information regarding exposure fees is outlined on the IBKR website under Exposure Fee for High Risk Accounts and in the following Knowledge Base Articles: 

• Exposure Fee Calculation Reports…

If you have a cash balance in an allowed deposit currency with a negative benchmark interest rate, the following will apply:

1. Credit Interest Fee:
   • You will be subject to a variable credit interest fee on the balance…

Interactive Brokers does not charge for transfers (the transferring ISA manager may charge you for transferring investments or cash proceeds to us).

---…

The code SY indicates that the position may be eligible for Stock Yield. Information on the Stock Yield Enhancement program including enrollment procedures may be found in the Interactive Brokers Knowledge Base…