From Longman Dictionary of Contemporary Englishtrade at something phrasal verbif shares etc trade at a particular price, they cost that amount to buy → trade→ See Verb table
Examples from the Corpus
trade at • The overnight unsecured call rate -- what banks charge each other for overnight loans -- traded at 0. 46 percent.• It settled in floor trading at 100. 69.• From the beginning of 1992 agricultural produce was to be traded at free market prices throughout the country.• Michael Mortara became the head of mortgage trading at Goldman Sachsthe leader in mortgage bond trading in the first half of 1988.• Before expanding, arrangements must be made for the higher cash requirements needed to support trading at increased levels.• Peter Marro heads mortgage trading at Morgan Guaranty.. Andy Stone heads mortgage trading at Prudential-Bache.• On Sunday April 26, Britain's first organic food market starts trading at Spitalfields in east London.• It was launched in the on - trade at the end of last summer and is now stocked in 2,000 outlets.From Longman Business Dictionarytrade at something phrasal verb [transitive]FINANCE if shares etc trade at a particular price, that is how much they cost to buyUS currency was trading at 1.21 euros, down from Tuesday’s close. → trade→ See Verb table 