Are shares loaned only to other IBKR clients or to other third parties?

The interest income which a client receives in exchange for shares lent through the Stock Yield Enhancement Program depends on the market-based rate. The market-based rate is determined by taking into account the rates on shares IBKR has loaned to or borrowed from others, and third-party market data…

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…

Shares borrowed through the Stock Yield Enhancement Program may be loaned to counter-parties and are not limited solely to other IBKR clients…

Yes, the Stock Yield Enhancement program is available to IBSG clients with IBKR Lite accounts. IBSG clients must enroll in the Stock Yield Enhancement Program before creating or converting to an IBKR Lite account. IBSG’s Stock Yield Enhancement Program offers clients the ability to lend out certain fully-paid and excess margin securities to IBSG for on-lending to other IBSG clients or to other market participants and receive a portion of the loan fees…