Many investors assume that "buy and hold" is the only investing strategy needed. The thinking goes like this: Find an inherently strong and reasonably valued stock, buy it and sock it away in your portfolio for the long haul. That's all fine and good, but it's no way to get rich.

Below, we pinpoint a single trade that can generate exponential gains and it's pegged to one of the most exciting growth opportunities now available: rising oil prices.

Oil prices have staged a stunning comeback in recent months after crashing to a 13-year low of $26 a barrel in February. Now, some of the best minds in the oil industry, people who've made vast fortunes on the movement of oil, are projecting a bull market in energy.

The global economic recovery appears to be on track, especially in the U.S., ensuring sufficient demand to keep energy prices from collapsing again. At the same time, supplies are tightening.

Before the markets opened on Monday, the price of West Texas Intermediate, the U.S. benchmark, stood at $46.96. Oil needs to reach $50 a barrel for energy companies to "break even" on their operations. But if you listen to some of the most influential experts, oil will shoot past that threshold.

Raymond James & Associates recently forecast that WTI crude oil will average at least $80 a barrel by the end of next year, as demand picks up and the global oil glut eases.

Former Royal Dutch Shell president John Hofmeister in January predicted that the price of oil will reach $80 a barrel this year. Hofmeister reiterated his bullish forecast in a July podcast interview with billionaire oilman T. Boone Pickens. The legendary Pickens also is bullish on energy; he predicts oil prices have bottomed and will hit at least $60 a barrel this year.

According to recent data from the New York Mercantile Exchange and the U.S. Depository Trust & Clearing Corp., options traders expect oil prices to rise to more than $80 per barrel this year and reach close to $110 per barrel.

Strategists at the exploration and production giant BP also expect oil prices to climb back to $100. They argue that fossil fuels will still be providing 80% of the world's total energy supply in 2035, despite the inroads from renewable energy sources such as solar and wind power.

Fact is, we still live in the age of hydrocarbon, and the world will always be thirsty for oil.

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