TD Ameritrade's instrument search will not return your desired results when you search for the instrument symbol (e.g MSFT), instead you must use the first word in the company's name/description (e.g. Microsoft). If you're unsure of the company name/description you can use TDA's symbol lookup: https://research.tdameritrade.com/grid/public/symbolLookup/symbolLookup.asp?frompage=
