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.
Take context from the input text and decide on the accurate relationship between 'SanDisk' and 'Nasdaq' from the options provided.
Options: headquarters location, member of, founded by, stock exchange