* TSX ends down 0.2% at 19,530.21

* Energy falls 2% as oil settles 2.6% lower

* Materials sector ends 2.1% lower

* Nuvei shares jump nearly 20%

Nov 8 (Reuters) - Canada's main stock index fell on Wednesday for a third straight day as a drop in commodity prices weighed on resource shares.

The Toronto Stock Exchange's S&P/TSX composite index ended down 45.38 points, or 0.2%, at 19,530.21, after posting declines on Monday and Tuesday. On Friday, it notched its highest closing level in six weeks.

The energy sector fell 2% as the price of oil dropped to its lowest level in more than three months on concerns over waning demand in the U.S. and China. U.S. crude oil futures settled 2.6% lower at $75.33 a barrel.

"Oil is looking oversold at current levels, so the possibility of a bounce can’t be ruled out," said David Morrison, senior market analyst at Trade Nation.

The materials group, which includes precious and base metals miners and fertilizer companies, was down 2.1% as gold and copper prices lost ground.

In contrast, industrials advanced 0.6%, helped by a gain of 10.2% for the shares of ATS Corporation after the automation solutions provider reported higher-than-anticipated revenue in the second quarter.

Fintech firm Nuvei Corporation was also among the biggest gainers. Its shares climbed 19.9% after the company beat third-quarter revenue estimates.

TC Energy shares added 0.8% after the pipeline operator reported third-quarter profit above estimates, benefiting from higher demand for liquefied natural gas. (Reporting by Fergal Smith in Toronto and Khushi Singh in Bengaluru; Editing by Tasim Zahid and Marguerita Choy)