Amateur's Guide To Getting Quick Return On Investments Share Share Trending Robert Allen There have been plenty of opportunities in the past year to make money — a lot of money — and to make it fast. My newsletter, Forecasts & Strategies, is geared to the long-term investor, but every once in a while, stocks and funds can suddenly take off. For example, we doubled our money in a no-load mutual fund in six months that invested heavily in Tesla, the electric car company. Then we doubled our money again in a bitcoin investment in three months. But those rapid profits are rare, especially in exchange-traded funds (ETFs) and mutual funds.