Investment is most intelligent when it is most businesslike. It is amazing to see how many capable businessmen try to operate on Wall Street with complete disregard of all the sound principles through which they have gained success in their own undertakings. Yet every corporate security may best be viewed, in the first instance, as an ownership interest in, or a claim against, a specific business enterprise. And if a person sets out to make profits from security purchases and sales, he is embarking on a business venture of his own, which must be run in accordance with accepted business principles if it is to have a chance of success.
Do not try to make “business profits” out of securities – that is, returns in excess of normal interest and dividend income – unless you know as much about security values as you would need to know about the value of merchandise that you proposed to manufacture or deal in.
Most businesses change in character and quality over the years, sometimes for the better, perhaps more often for the worse. The investor need not watch his companies’ performance like a hawk; but he should give it a good, hard look from time to time.
Obvious prospects for physical growth in a business do not translate into obvious profits for investors.