S&P 500 futures fell 0.28%.
MSCI’s broadest index of Asia-Pacific shares outside Japan dropped 0.76%, hurt by a 1.42% fall in Chinese blue chips.
The United States and others, including the European Union, sanctioned Chinese officials on Monday over human rights abuses in Xinjiang, and Beijing hit back with punitive measures against European lawmakers, diplomats, institutes and families.
“The fall could be due to the sanctions,” said Iris Pang, chief economist for greater China at ING Wholesale Banking. “More pressure from international politics is going to affect asset markets.”
Jin Jing, an analyst with China Fortune Securities, said sanctions hurt risk appetite, in particular for foreign investors, who sold shares via the Stock Connect.
Persistent worries of policy tightening at home also continued to weigh on high-flying sectors and stocks with lofty valuations as investors turned cautious.
Hong Kong’s Hang Seng Index also fell 1.62%, with traders’ attention drawn by a tepid market debut for Baidu in which the Chinese tech giant’s shares barely traded above their secondary listing price.
Beyond China, Asian shares were mixed. Japan fell 0.61% and Australia fell 0.11%, both having earlier tracked overnight gains on Wall Street, but emerging markets in the region performed better.
The Dow Jones Industrial Average rose 0.32%, the S&P 500 gained 0.70% and the Nasdaq Composite added 1.23%, helped by a drop in Treasury yields.
Benchmark 10-year notes last yielded 1.6717%, down from 1.732% late on Friday.
Powell said in remarks prepared for a congressional hearing that the U.S. recovery had progressed “more quickly than generally expected and looks to be strengthening”.
“The FOMC last week laid out pretty clearly what the Fed’s view is with regard to rates… the next thing that markets will focus on is maybe getting some details from Yellen with regard to further infrastructure investment,” said Alex Wolf head of investment strategy for Asia at J.P. Morgan Private Bank, referring to a statement from the Federal Open Market Committee.
The dollar gained slightly against a basket of six major currencies last trading at 91.887, having slipped 0.32% on Monday, while making advances against the kiwi, Aussie and sterling.
The New Zealand dollar hit a three-month low after the government introduced taxes to curb housing speculation, a move investors reckoned could allow the central bank to hold interest rates lower for longer with less risk of a property bubble.
Oil also dropped amid ample supply and concerns that new pandemic curbs and slow vaccine rollouts in Europe will slow a recovery in fuel demand.
U.S. West Texas Intermediate crude oil futures dropped 1.22% and Brent crude futures dropped by 1.24%.
(Reporting by Alun John in Hong Kong Chris Prentice in Washington; Additional reporting by Luoyan Liu in Shanghai; Editing by Sam Holmes and Gerry Doyle) ((email@example.com; +1 (202) 843-6464;))