Japanese stocks rebounded strongly on Tuesday after plunging into a bear market on Monday. The Nikkei 225 and Topix indexes rebounded nearly 10%, the biggest gain since October 2008; export stocks such as technology companies and automakers soared after the yen fell about 1% against the dollar. The sharp stock market shock triggered the circuit breaker mechanism of Nikkei futures, while the implied volatility of the index also fell from its highest level since 2008. Hideyuki Ishiguro, chief strategist at Nomura Asset Management, said: "The panic selling may be over, but today's market trend may still be a roller coaster as the anxiety in global markets remains high."