def find(self, search_term: str) -> List[Commodity]:
        """ Searches for security by part of the name """
        query = (
            self.query
            .filter(Commodity.mnemonic.like('%' + search_term + '%') |
                    Commodity.fullname.like('%' + search_term + '%'))
        )
        return query.all()
Searches for security by part of the name