What is the relationship between RadioShack and trade in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

The SEC said Jaspen and Supranonok used contracts-for-differences, which are derivatives allowing for leveraged stock price bets, to trade from 2010 to 2015 in Panera Bread Co, RadioShack Corp (Other OTC: RSHCQ - news ) and other companies based on press releases stolen from the three newswires.

Answer: industry