By David Winning

SYDNEY--Scentre Group signaled the valuation of its mall portfolio fell by around 10% over the six months through June, largely driven by the impact of the coronavirus pandemic.

Scentre said the decline wouldn't affect its operating earnings or funds from operations, adding that it is a preliminary estimate and subject to an external audit.

Management expects to report net operating cash flow of more than 250 million Australian dollars (US$180 million) for the six months through June, which represents the first half of its fiscal year. The company hasn't received any funds from the federal government's JobKeeper wage subsidy scheme.

Scentre, which will report its first-half result on August 25, added it had liquidity of A$4.4 billion available at the end of June.

Write to David Winning at david.winning@wsj.com