My grandfather just passed and we were going through his assets and came upon hundreds of penny stock certificates. Some of the companies we know are still traded and are worth something, some we know went BK. My question(s) are 1.) How do we know if he definitely still owns... More results like this http://bestdaytradingsoftware.org/how-do-i-research-old-stocks Tags:012345678910stock1112marketbasics131415his161718certificates19