I asked TradeStation but they don't answer which clearing firms they use. They are like "we try every way to find shares to locate". Does someone has experience with this broker? Is their inbuilt short locate tool good enough to find borrowable shares for the daily runners?
I can't comment on the quality of short locates however I thought they have been self clearing for a long time.
Looks like they introduce to Wedbush, according to FINRA https://files.brokercheck.finra.org/firm/firm_39473.pdf