What is the relationship between SanDisk 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.

Chip makers were also among the top five percentage gainers in the Nasdaq 100 since the index closed at its 2015 low on Aug. 25, with SanDisk topping the list with a 70 percent jump on the back of a takeover bid from Western Digital.

Answer: stock_exchange