Si Robertson net worth: Si Robertson is an American duck hunter and reality television star who has a net worth of $2 million. Si Robertson is one of the stars of A&e's newest hit show "Duck Dynasty". Si is the younger brother of family patriarch Phil Robertson who was the original inventor and founder of the Duck Commander company. Si Robertson is an army veteran who served in Vietnam. Robertson retired from the army in 1993 and went to work full time for Duck Commander where he designs the reeds for all the duck calls. On Duck Dynasty, Si can be seen with his nephew Willie Robertson and the entire Duck Commander family. The show entered in second season in the fall of 2012 and is one of the networks most popular new reality programs.