If your SoFi Invest ACH transfer is still pending you may be able to cancel it. To cancel a recent transfer, you will first need to select the Invest account the transfer was for, then you will click on "view all activity" below the account performance graph, finally, on that screen, you will have the ability to cancel a recent transfer.
If you are unable to cancel the transfer yourself, please contact an Investment Specialist at 855-525-7634 for further assistance.