23 Jan 2005 That figure does not include those penny stocks that were never bought a split- adjusted 133,000 shares of Audible at an average cost of 40 cents each. percent return on an investment in a Canadian-based energy stock The second reason many investors may be attracted to penny stocks is the notion that there is more room for appreciation and more opportunity to own more stock. If a stock is at $0.10 and rises by $0.05, you will have made a 50% return. This, together with the fact that a $1,000 investment can buy 10,000 shares, The average stock market return over the long term is about 10% annually. That's what buy-and-hold investors have historically earned before inflation.