Recently, I took a closer look at the oil sector and found that many people think when oil prices rise, they should chase oil stocks. But this logic is a bit flawed. Without even getting into the 2026 Middle East situation that’s set to flare up again, or the time when oil prices briefly broke through $100, just understanding how the oil industry chain is structured can help you avoid most of the pitfalls that most people step into.

When it comes to oil concept stocks, many people’s first reaction is “oil prices go up, so buy.” In reality, however, even stocks that are all tagged as oil concepts react differently—some benefit directly when oil prices rise, while others get crushed by cost pressures. I recently put together a set of logic and want to share it with everyone.

The oil industry chain is roughly divided into four segments. Upstream is exploration and production, such as ExxonMobil (XOM) and ConocoPhillips (COP) in the US. For every $1 increase in oil price, profits double—this segment is the most sensitive. Midstream is pipeline transportation, such as Enbridge (ENB) in Canada. It earns fixed tolls, so oil price fluctuations have little impact; instead, it’s often a top choice for “set-and-hold” investors who prioritize high dividends. Downstream is refining and petrochemical processing—Formosa Petrochemical (Formosa Petrochemical), Formosa Plastics (Formosa Plastics), and Nan Ya Plastics are all in this category in Taiwan. Crude oil is their cost base, and their profit comes from the spread between crude oil costs and the selling prices of finished products. There’s also an important sideline: LNG liquefied natural gas. In the US, Cheniere (LNG) has stood out particularly over the past two years, as Europe shifted toward US natural gas.

This structure matters because it determines how oil price moves affect different stocks. Upstream and LNG are the most affected by oil prices; midstream is the most stable; downstream falls in between. Once you understand this logic, you won’t be tricked by short-term “top gainers” lists.

When talking about Taiwan stocks, you can’t bypass the “Formosa Petrochemical Four Treasures.” Formosa Petrochemical is Taiwan’s only refinery. It buys crude oil from CPC, refines it, and then sells gasoline and diesel—its earnings come from the crack spread in between. This stock performs best when oil prices rise moderately and downstream demand stays steady, because its gross margin can remain at a reasonable level—making it suitable for swing trading that follows oil price trends. Formosa Plastics, Nan Ya, and Formosa Chemicals lean more toward petrochemical inputs for plastics, and their core is the petrochemical cycle rather than just oil prices. Only when oil prices rise steadily, downstream customers are in strong demand, and they’re willing to accept price increases will these companies look particularly strong. If oil prices surge but product selling prices can’t keep up, you may see a “oil rises but the stock doesn’t” situation. That’s why choosing oil concept stocks should start with their position in the industry, and then look at their stock price.

If you can access US stocks through a program like the one available via Gate.io’s cross-broker/qualified trading connections (e.g., through a system that allows trading the US market), your options become even richer. ExxonMobil and Chevron are global leaders. They have exposure across both upstream and downstream, meaning they’re highly sensitive to oil prices but also relatively resilient—suitable for medium- to long-term positioning. Enbridge’s dividend yield is as high as 7%, and its cash flow is stable, making it a good choice for dividend-focused investors. ConocoPhillips, as a pure upstream company, is the most sensitive to oil prices—its upside flexibility is the greatest when oil rises, but the risks are also the highest. Cheniere, meanwhile, is a beneficiary of the global energy transition.

When it comes to risks, this is something many people tend to overlook. First, demand could experience a sharp, steep decline. If that happens, oil prices could plunge by 20-50%, and oil stocks will fall along with them. Second, the long-term pressure from the energy transition is always present. With electric vehicle adoption and carbon neutrality policy promotion continuing to advance, these forces can cap the valuation ceiling for upstream exploration companies. Third, some oil companies become overly optimistic at oil price peaks, take on large amounts of debt, and expand production aggressively—only to fall into trouble during the cycle’s low point. This is what’s known as the capital expenditure trap.

From a fundamentals perspective, both the IEA and EIA predict that by 2026 the global oil market will be oversupplied, with an average daily surplus of 1.87 million barrels. This is the core factor that suppresses a sustained long-term rise in oil prices, and it’s also why you shouldn’t blindly chase prices. Although geopolitical premiums can support oil prices in the short term, once conflicts ease, the situation could reverse—oil-price beneficiaries may no longer be the same, especially for downstream refining and petrochemical companies. As costs decline, their profitability could actually improve.

If small investors want to get involved, there are several options. The simplest is to buy an oil ETF, such as Yuanta Oil ETF. You can enter with under 3,000 TWD, without needing to research individual stocks. If you want to pick individual stocks, combining Formosa Petrochemical with Formosa Plastics is a solid choice. You can potentially profit from trading spreads over cycles as well as collect dividends. If you have sufficient capital and trading experience, you can consider a US stock portfolio—for example, Enbridge plus ExxonMobil—pairing high dividends with the resilience of leading companies that tend to hold up better.

Finally, a reminder: oil stocks are a “make fast money” and “make cycle-based money” play—not something you simply hold and earn from dividends long term. Once the economic cycle turns and oil prices fall, a 30-50% pullback in oil stocks is completely normal. So be sure to set stop-losses, control your position size, and avoid going all-in. Only then can you steadily profit through cycle volatility.