Investors had two reactions to Israel's broad attack on Iran late Thursday: They sold stocks broadly and bought crude oil and gold. Futures trading suggests the Standard & Poor's 500 Index will open down 52 points.

U.S. stock indexes climbed and oil fell from last week's highs on Monday after conflict between Israel and Iran left crude production and exports unaffected, while investors stayed braced for a week packed with central bank meetings.

Asia stock markets were little changed on Monday, following Friday’s sharp sell-off on Wall Street amid escalating Middle East tensions and global economic concerns. Investors digested a batch of mixed Chinese economic data.