share: digg facebook twitter Stock markets rise after Fed chief's speech LONDON (AP) — World stock markets rose on Monday, heartened by Federal Reserve chief Ben Bernanke's call on the U.S. government to help the economy and his refusal to rule out more monetary stimulus by the central bank. While Bernanke announced no new economic stimulus measures — as some investors had hoped — in his speech in Jackson Hole, Wyoming, he did leave open the possibility of more action if another recession looks likely. Analysts warned market sentiment will remain fragile, however, as economic indicators this week are expected to show slowing global growth and the eurozone's debt crisis is generating uncertainty in European markets again. Mainland Chinese shares lost ground, with the benchmark Shanghai Composite Index falling 1.4 percent to 2,576.41.