Westpac paced the losses among the big four (-4.4%) after its 3Q cash profit fell from a year earlier.
The other majors were down more than 1% each.
Scepticism over Qantas’ plans to restructure its international operations saw its share price fall 0.3%.
In the mining space, Rio Tinto and BHP lost over 1% each, whilst Oz Minerals slumped 3.6% on the back of a disappointing half-year result.
James Hardie strengthened 0.9% after its 1Q underlying result came in slightly ahead of analyst estimates.
The ASX 200 shed 36 points (-0.8%), settling at 4247.