The Tokyo stock market appears to be gathering steam for bursts of high-priced activity in the months ahead.

After giving up 23 percent since hitting the April 12 peak of 20,833.21, the 225-issue Nikkei average rebounded strongly Monday, topping the 17,000 level for the first time in more than two weeks.

The trigger for the recent decline was the April 14 tumble in New York share prices. Selloffs triggered by the reshuffle of the Nikkei components ensued, adding to the downward pressure.