What happened Shares of Phillips 66 (NYSE: PSX) rose 22.5% in February, according to data provided by S&P Global Market Intelligence. Phillips isn't an oil producer, but its midstream and downstream operations are still heavily affected by the outlook for oil-derived product demand and somewhat by oil prices. Phillips actually reported its fourth-quarter earnings results at the end of January, and its earnings declined more than analysts expected. However, in February, optimism over the vaccine rollout and economic reopening caused oil prices to rise, and Phillips along with them. Image source: Getty Images. So what As a result of the COVID-19 pandemic, many of Phillips' energy businesses were heavily affected. Most notably, its refining plants took a massive hit, as lower demand for oil during lockdowns caused Phillips' facilities to run a lower capacity utilization. Refining profits swung from an adjusted profit of $1.95 billion in 2019 to a whopping $3.33 billion loss in 2020, causing the company's overall results to swing from a $3.66 billion profit in 2019 to a $382 million loss in 2020. The company also took some massive asset impairment charges, making its losses according to generally accepted accounting principles (GAAP) an even greater $3.98 billion. Even though economies are starting to reopen, OPEC+, a coalition of oil producers from the Middle East and Russia, has maintained its supply discipline instituted during 2020. At the same time, demand appears to be recovering, especially from China. Since February, the price of crude is up about 30% to about $67, well above pre-pandemic levels. Now what Even though last year was brutal, Phillips is one of the more risk-off ways to play oil. The company has a relatively good balance sheet among pipeline and downstream companies, and was able to maintain its dividend throughout last year, as trying as it was, while also maintaining an investment-grade credit rating. Today, Phillips' dividend yields 4.3%, higher than much of the market, but significantly lower than just a few months ago, and the stock is perhaps less attractive now after its recent rise. If you're looking to play a continued spike in oil prices, it may be a better idea to look at upstream oil producers. Refiners like Phillips depend on demand for end-use products, but really make margins based on the spread between oil prices and end-use refined products. So, while demand for things like jet fuel, gasoline, and other refined products are great for Phillips as the economy reopens, Phillips is not purely correlated with the price of oil, even though it has been over the past month. 10 stocks we like better than Phillips 66When investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Phillips 66 wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of February 24, 2021 Billy Duberstein owns shares of Phillips 66. His clients may own shares of the companies mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source