I checked the current stock broker listings for Andrew Robert Duke, Andy Duke, Robert Duke, etc. I came up empty on all AKAs. I believe the database is purged after a couple of years if the broker license goes inactive (unless there is a disciplinary action, in which case they maintain it for a longer period... 10 years, I think.)
NASD BrokerCheck
I did find one company in Colorado that may be the same Duke. It was suspended and has now been dissolved. I couldn't find any other information on the company but the name of the company "1065 Lipan" appears to be an address, so this may have been an LLC for purposes of owning property.
And, I found this article written about Iraq by an "Andrew R. Duke"... which describes the author as "Andrew R. Duke, Former Sergeant of Arms to the Colorado House of Representatives "Name: 1065 LIPAN LIMITED LIABILITY COMPANY Entity ID: 19951057942 Entity Type: LIMITED LIABILITY COMPANY Filing Date: 05/01/1995 Status: DISSOLVED State of Incorporation: CO Term: None Inactive Date: 01/01/2005 Last Report: Report not filed Last Report Filing ID: none Name Reservation Expires: N/A - - - - - - - - - - - - - - - - - - - - - - - - Registered Agent Name: DUKE ANDREW R Physical Address: 4155 E JEWELL AVE STE 616 DENVER Colorado 80222 PO Box: None Suspended 11/01/1999 Dissolved 01/01/2003Colorado Secretary of State
The Financial Times, April 30, 2003 p14
Ending of Iraqi regime could usher in an era of long-term stability for oil-dependent states.
by Andrew Duke; Joshua Putterman; Sam Zakhem.
Interesting info about the "Andrew R. Duke" you found.