IIRC if your brokerage reports everything to the IRS properly, you only need to fill out net short- and long-term capital gains on your schedule D rather than specifying every single transaction on a bunch of Form 8949 copies.
Not sure if Double's underlying brokerage is reporting everything necessary for this to be the case though, as I believe some brokerages don't.
Not sure if Double's underlying brokerage is reporting everything necessary for this to be the case though, as I believe some brokerages don't.