We are aware of an intermittent issue with the syncing of transactions and holdings with Ally Bank Investment accounts. Our aggregation team has found a limitation in their data connection model which prevents a consistent data sync for the investment accounts from this institution.
Because of this, we recommend you to add your investment account with Ally Bank as a manual account if you do experience this as there is currently no ETA to the resolution.
This will allow you to continue to have a complete picture of your financial life. For help with creating a manual investment account, please review our FAQ: Add Manual Investments Holdings