From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history. Share | Related Content The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy. Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment.