TAIPEI (Reuters) -TSMC, the world's main producer of advanced AI chips, posted a 39.1% jump in third-quarter profit to record levels that handily beat market forecasts on Thursday, though U.S. tariffs could weigh on its outlook.

Benefiting from surging demand for advanced chips used in artificial intelligence applications, Taiwan Semiconductor Manufacturing Co ( TSM ) said net profit for July-September climbed to T$452.3 billion ($14.76 billion), its sixth straight quarter of double-digit growth.

That was well ahead of a T$417.7 billion LSEG SmartEstimate drawn from 20 analysts. SmartEstimates are weighted toward forecasts from analysts who are more consistently accurate.

Trump's trade policies and threats to put tariffs on semiconductors have created much uncertainty for the global chip industry and TSMC, whose customers include Apple and Nvidia ( NVDA ).

TSMC announced plans for a $100 billion U.S. investment with Trump at the White House in March, on top of $65 billion pledged for three plants in the state of Arizona, one of which is up and running.

Taiwan-listed shares in TSMC have risen 38% so far this year, largely brushing off concerns about tariffs, and ahead of the 20% rise for the broader market.

($1 = 30.6450 Taiwan dollars)

(Reporting by Wen-Yee Lee, Faith Hung and Ben Blanchard; Editing by Christopher Cushing and Muralikumar Anantharaman)