If you just made an ACAT transfer to tastyworks that included any positions, then you may notice that the cost basis may be incorrect. Not to worry though, cost basis information for positions is typically sent from the outgoing broker within 30 days. That said, your original trade dates for taxes are still intact. The trade price you see on the platform for any transferred position is based on the closing mark the day the positions landed in your account. Your cost basis will adjust on the platform once your information is sent and ingested by our system.