I got an email today with a new promotion from Scottrade.
This offer is somewhat unusual, as it allows deposits to an existing account.
Account setup (if needed) and funding must complete by 12/01/2017.
Bonus amounts range up to $ 2,500 on a $ 1,000,000 deposit, but start at $ 50,000.
Info at this link: https://www.scottrade.com/landingpages/cash-offer-details.html