I am looking for historical short/borrow data, but I'm not sure if it's provided by IB.
I know that IB's public FTP gives the current fee, rebate and availability. However, it does not keep the history.
From the documentation I see "feerate" data. I'm not sure if it's historical (like if I had kept a history of the FTP's data). I don't see the other fields (rebate and availability) being offered either.
How do users here source IB's borrow data historically?
