It had climbed more than 3% last week amid robust earnings and signs of an end to rate hikes by major central banks.
Energy stocks led sectoral declines with a 1.2% fall, tracking a more than 1% drop in crude oil prices.
Watches of Switzerland soared 12.2% to the top of the STOXX 600 as it expects to more than double its annual profit by 2028.
UBS Group posted a $785 million loss in the third quarter, while signalling that its core wealth business is stabilising. The stock was up 4.3%, aiding a 1% rise in the financial services sector index.
European shares subdued as energy counters gains in financials