Jana Randow

Officials cite market volatility and weaker global growth.

The Fed still expects to raise interest rates gradually but is prepared to postpone its plans if market turbulence proves more than a passing squall.

The Fed chairwoman addresses lawmakers this week with mounting speculation against another rate hike happening in March.

BlackRock Chief Executive Officer Laurence D. Fink warned there is "way too much optimism" in financial markets as he predicted repeats of the market turmoil that roiled investors this week.