Far Vista Petroleum Corp. (FVSTA)

[janice shell]

Because there isn't any reason for them to stop trading, or even any mechanism by which that would, under normal circumstances, occur. Though this may seem odd to you, a public company can't just call the SEC or FINRA and say "We don't want to trade anymore". Unless the whole company is bought out--unlikely in the case of bankruptcy--there will be no tender offer, and no stock will be cancelled.

If the company was once exchange listed, it'll be delisted to the Pinks. If it's an SEC filer, it may after a few years of not filing have its registration revoked, In that case, it will stop trading and the ticker will disappear.

If it's a Pink, though, there's no registration to revoke. So even if the company goes bankrupt and disappears completely, its ticker will trade on. If the stock eventually stops trading entirely, after a few years FINRA will declare it an "inactive issue" and delete the ticker.