US stocks wobbled on Monday, pulling back from records amid concerns over Federal Reserve independence after US prosecutors opened a criminal investigation into Chair Jerome Powell. The Dow Jones Industrial Average (^DJI) sank 0.2%, while the S&P 500 (^GSPC) and the tech-heavy Nasdaq Composite (^IXIC) were roughly flat on the heels of all-time closing highs for Wall Street stocks. The three indexes had begun Monday's session lower but pared losses in late morning trading. Rattled markets are turning the ...