In layman's terms, oil on the commodities market has a "spot price" and a "future price". The spot price is what the last guy paid to buy a barrel of oil right now (and thus a pretty good indicator of what you'll have to pay). The futures price is what the last guy paid for a "futures contract", where they agreed to buy a barrel of oil for $X at some point in the future. Futures contracts are a form of hedging; a futures contract is usually sold at a price somewhere between the current spot price and the true expected future spot price; the buyer saves money versus paying the spot price, while the seller still makes a profit. But, the buyer of a futures contract is basically betting that the spot price as of delivery will be higher, while the seller is betting it will be lower. Futures contracts are available for a wide variety of acceptable future dates, and form a curve when plotted on a graph that will trend in one direction or the other.

Now, as Chad said, oil companies basically get their cut no matter what. Oil stocks are generally a good long-term bet. As far as the best short-term time to buy in to an oil stock, look for very short windows when the spot and near-future price of gasoline is trending downward but oil is still on the uptick. During those times, the oil companies are paying their existing (high) contracts for oil, but when the spot price is low it affects futures prices, which will affect the oil companies' margins. Day traders will see that, squawk "the sky is falling" and sell off, driving the price down temporarily. That's when you buy in.

Pretty much the only other time an oil stock is a guaranteed win is when the entire market takes a swan dive and then bottoms out. Oil has such a built-in demand, for the foreseeable future, that regardless of how bad it gets you WILL make money on an oil stock. So, when the entire market's in a panic and everyone's heading for gold, T-debt etc, buy the major oil stocks across the spectrum. Even if one stock tanks, chances are really good that another company will see that and offer a buyout, jacking the bought company's stock (which you then sell and reinvest the cash into the buying company, which will have taken a hit on the news due to the huge drop in working capital).

Of course, the one thing to watch for in the headlines is any news that renewables have become much more attractive than oil. Some enterprising individual will invent the super-efficient solar cell, or they'll perfect fusion power, or some nut will figure out you can get free heat from your wastewater pipe or septic system by reclaiming heat from hot water and bio-decomposition (wait, they already did that). If it happens and it's for real, oil may take a dive from which it will never recover.

In layman's terms, oil on the commodities market has a "spot price" and a "future price". The spot price is what the last guy paid to buy a barrel of oil right now (and thus a pretty good indicator of what you'll have to pay). The futures price is what the last guy paid for a "futures contract", where they agreed to buy a barrel of oil for $X at some point in the future. Futures contracts are a form of hedging; a futures contract is usually sold at a price somewhere between the current spot price and the true expected future spot price; the buyer saves money versus paying the spot price, while the seller still makes a profit. But, the buyer of a futures contract is basically betting that the spot price as of delivery will be higher, while the seller is betting it will be lower. Futures contracts are available for a wide variety of acceptable future dates, and form a curve when plotted on a graph that will trend in one direction or the other.

Now, as Chad said, oil companies basically get their cut no matter what. Oil stocks are generally a good long-term bet. As far as the best short-term time to buy in to an oil stock, look for very short windows when the spot and near-future price of gasoline is trending downward but oil is still on the uptick. During those times, the oil companies are paying their existing (high) contracts for oil, but when the spot price is low it affects futures prices, which will affect the oil companies' margins. Day traders will see that, squawk "the sky is falling" and sell off, driving the price down temporarily. That's when you buy in.

Pretty much the only other time an oil stock is a guaranteed win is when the entire market takes a swan dive and then bottoms out. Oil has such a built-in demand, for the foreseeable future, that regardless of how bad it gets you WILL make money on an oil stock. So, when the entire market's in a panic and everyone's heading for gold, T-debt etc, buy the major oil stocks across the spectrum. Even if one stock tanks, chances are really good that another company will see that and offer a buyout, jacking the bought company's stock (which you then sell and reinvest the cash into the buying company, which will have taken a hit on the news due to the huge drop in working capital).

Of course, the one thing to watch for in the headlines is any news that renewables have become much more attractive than oil. You wait; in the next few decades some enterprising individual will invent a super-efficient solar cell that provides all the power a real, practical car will ever need, and that is simultaneously integrated into wind farms making oil/gas plants passe. When that happens oil will be a thing of the past.