What is the relationship between Baidu and Nasdaq 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.

But the results were below market forecasts, and Baidu shares tumbled 8.69 percent to $180.50 in after-market trading on the Nasdaq that followed release of the earnings figures.

Answer: stock_exchange