Chinese stocks nosedived on Thursday, triggering the second daylong trading halt of the week and sending share markets, currencies and oil prices lower as investor jitters rippled across Asia.<br />The benchmark Shanghai Composite Index tumbled 7.3 percent to 3,115.89 before new "circuit breakers" suspended trading for the day.<br />The smaller Shenzhen Composite Index slumped 8.3 percent to 1,955.88.<br />Chinese stock trading was also suspended on Monday after a plunge that roiled Wall Street and other global markets.<br />The Shanghai benchmark has dropped 12 percent so far this year, which is barely a week old.<br />Thursday's market plunge may have been exacerbated by investors rushing to sell before they were locked out, some analysts said.
