European equities ended mixed on Monday, failing to hold onto last week's strong gains, as investors grew cautious over oil prices and individual stock news.
The pan-European STOXX 600 index closed the day down around 0.3 percent.
E.ON and RWE closed the day higher after the companies passed a government stress test assessing whether they have enough funds to pay for the decommissioning of the country's nuclear reactors.
RWE shares closed up 9.4 percent, while E.ON was almost 5 percent higher at the close.
Other stocks at the top of the STOXX 600 included Stora Enso, after it said that third-quarter operating profit would be larger than expected. This propelled shares in the Finnish pulp and paper maker to close 6.3 percent higher.
In the commodities space, oil and gas firms traded in the red as last week's oil rally lost steam on Monday.
Shares in Glencore sank over 6 percent by the close after the London-listed mining giant said it planned to sell copper mines as part of efforts to slash its debt pile.
In other news, Anheuser-Busch InBev finished trade roughly flat after Reuters cited a source saying it the brewer raise its takeover offer for SABMiller ahead of . Shares in SABMiller closed down 1.3 percent.
Aircraft manufacturing stocks closed sharply lower on media reports that European competition regulators might investigate their maintenance and servicing policies.
At Europe's close, U.S. stocks traded in narrow range, as investors continued to eye commodity prices and readied for earnings season.
Overnight, equity markets in China led gains in Asia on Monday, amid expectations that Beijing would roll out further stimulus measures to ward off a sharper slowdown in the world's second-largest economy.