U.S. stocks drifted around their all-time highs, as a record-setting week for Wall Street closed on a quieter note.

"From a sentiment perspective, we're one bad macro data point away from a pullback," BMO's Brian Belski told Business Insider.

TOKYO -- Asian shares traded mostly lower Wednesday after Wall Street drifted to a mixed finish. Investors were watching for any market impact from the debate between the U.S. presidential candidates, Vice President Kamala Harris and former President Donald Trump.