The turmoil on global equity markets has boosted the trading of stocks.
The stock market operator, NZX, says trades doubled to 86,000 last month compared with the same period a year earlier, while the total value rose by about half to $51 million.
On a daily basis, trades nearly doubled to more than 3700 and the value stood at $115 million, half again as much as August last year.
The stock market lost over $3 billion at one stage in early August, because panicking investors worried the global recovery was stalling, and has still to recover that lost ground.