A full listing of Standard Oil stock is available on the New York Stock Exchange. Although the company has been dissolved for quite some time, stock information of its subsidiaries is still available.
Standard Oil was formed in 1870, and within eight years it controlled 85% of America's oil industry. The company was forced to dissolve in 1911, under the Sherman Antitrust Act. As a result, the company was broken down into several separate companies in order to break up the monopoly it had on the oil industry. After a bout of merging, the descendants of the company exist today in five factions: B, Exxon Mobil, ConocoPhillips, Marathon Oil and Chevron.