There are rules to be in the exchange and so on https://listingcenter.nasdaq.com/rulebook/nasdaq/rules/nasdaq-5800-series https://listingcenter.nasdaq.com/rule

There are rules to be in the exchange and so on https://listingcenter.nasdaq.com/rulebook/nasdaq/rules/nasdaq-5800-series https://listingcenter.nasdaq.com/rulebook/nasdaq/rules/nasda... Aside from that sometimes there are also political moves that might affect listing/delisting.