Why are my shares not being lent, even though I am enrolled in the Stock Yield Enhancement Program (SYEP)?

There is no guarantee that all eligible shares in a given account will be loaned through the Stock Yield Enhancement Program because there may not be demand in the securities lending markets for certain securities, IBKR may not have access to a market with willing borrowers or IBKR may not want to loan your shares…

If a client maintains fully-paid securities which have been loaned through the Stock Yield Enhancement Program (SYEP) and subsequently initiates a margin loan, the SYEP loan will be terminated to the extent that the securities do not qualify as excess margin securities. Similarly, if a client maintaining excess margin securities which have been loaned through the program increases the existing margin loan, the SYEP loan may again be terminated to the extent that the securities no longer qualify as excess margin securities…

If a client maintains fully-paid securities which have been loaned through the Stock Yield Enhancement Program and subsequently initiates a margin loan, the loan will be terminated to the extent that the securities do not qualify as excess margin securities. Similarly, if a client maintaining excess margin securities which have been loaned through the program increases the existing margin loan, the loan may again be terminated to the extent that the securities no longer qualify as excess margin securities…

There is no guarantee that all eligible shares in a given account will be loaned through the Stock Yield Enhancement Program as there may not be a market at an advantageous rate for certain securities, IBKR may not have access to a market with willing borrowers or IBKR may not want to loan your shares…