* AGL Energy set for worst day in near 12 years

* AMP among the top pct gainers on the Aussie benchmark

* NZ shares rebound after a steep fall in the previous session

Aug 13 (Reuters) - Australian shares edged lower on Thursday, pulled down by losses in heavyweight financial stocks, even as the country's second-most populous state reported its lowest single-day rise in new coronavirus infections in more than three weeks.

The S&P/ASX 200 index was down 0.3% to 6117.8 by 0112 GMT, on track for a second consecutive day of declines.

Financial stocks dominated losses on the local benchmark, falling nearly 1% with the 'Big Four' banks dropping between 1.4% and 2.7%.

AGL Energy, the country's top power producer, dropped nearly 9% and was the top percentage laggard to the benchmark as it warned that its profit could shrink as much as 30% in fiscal 2021.

Victoria state logged eight coronavirus deaths on Thursday, down from 21 a day earlier with the number of new daily infections also showing signs of improvement.

Among the gainers, technology stocks tracked their U.S. peers higher, jumping over 2% with buy-now-pay-later firm Afterpay adding nearly 2%.

Gold stocks rallied 1.5% after the yellow metal recovered from its worst fall in seven years.

Newcrest Mining, which is set to report its full-year results on Friday, advanced nearly 2%, while Evolution Mining gained 1.9% after reporting a higher annual profit.

Wealth manager AMP Ltd was on course for its best session since late August 2003 as it sought to return A$544 million ($390.32 million) to shareholders through a special dividend and buyback.

New Zealand's benchmark S&P/NZX 50 index rose 0.68% to 11570.36 as of 0121 GMT, set for its best session in over a week on the back of healthcare stocks.

The Reserve Bank of New Zealand surprised markets on Wednesday by expanding its bond-buying programme and warned that policy rates might have to go below zero to revive the coronavirus-battered economy as the country was plunged back into lockdown.

($1 = 1.3937 Australian dollars) (Reporting by Deepali Saxena; Editing by Rashmi Aich)