How much do you pay your broker?

[Dr.PI]

Only if you have a debt.

Interactive Brokers Q&A [2025]

No. If you have 2 different accounts, one with lending enabled, another without lending, you can control what can be lent out by moving positions between them. However, if you have a debt (negative cash positions), some stocks are taken by IB as a collateral and they can be lent out no matter your settings (and with no interest payments for you). And of course they will take the juiciest ones to lend.

"Stock Yield Enhancement Program" of Interactive Brokers

Did you have a margin loan at this time? If yes, IB takes your shares as a collateral and then they lend it. Same if you bought shares less than 2 days ago and they had not been settled yet. Run Activity statement for the ex dividend date and see what “Collateral for Customer Borrowing” section says.

"Stock Yield Enhancement Program" of Interactive Brokers

I don’t want to continue this argument, maybe you are right. You can actually see how many of your shares are segregated and how many are borrowed. It is hidden pretty carefully, and you have to do some tricks to access this information. You have to run a standard activity report, not a customized template, for a specific date, but not too early. Something like after the beginning of the next trading day in US. Then you get a section in the report called “Collateral for Customer Borrowing”. I…