What is the relationship between Euronext Amsterdam and Euronext 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.

Euronext had just one new large capitalisation listing in the month of August 2015 (as opposed to seven in July 2015), Altice on Euronext Amsterdam with a market capitalisation at listing of €21.9 billion.

Answer: operator