Quote from Stoxtrader:
FinViz keeps a list of "shortable" stocks, but like IB I think the list will never be realtime updated.
Does *any* broker or other service keep a list of shortable equities, updated often enough to be considered realtime?
Brokers get an "easy to borrow" list, not the other way around. It gets loaded every morning. If it's not on the list, you need a locate.