ANZ says "an abundance of caution" led it to request a stop to trading of its shares after the bank accidentally published its own profit data on its website.
The bank's shares were halted from trade shortly before the end of Monday's share market session, at the company's request.
It later revealed it had late last week inadvertently published on its website unaudited data showing percentage movements in its cash profit for the second half of its fiscal year.
The numbers were contained in a template of its financial tables intended to assist analysts preparing for the bank's full year financial results presentations on Friday.
ANZ said the release of the figures did not constitute a breach of its continuous disclosure obligations, but it sought the trading halt "out of an abundance of caution".
Trading halts are typically requested to ensure all investors are equally informed before trading in a stock.
The shares, which had gained 32 cents, or one per cent, to $33.34 before the halt commenced, will resume trade as normal on Tuesday.
