Australia’s share market, or the All Ordinaries Index (INDEXASX: XAO)(ASX: XAO), is down by 0.51% at lunch.

The oil price has fallen slightly, which has caused Woodside Petroleum Limited (ASX: WPL) to fall by 1.18% and BHP Billiton Limited (ASX: BHP) is down by 1.15%.

APA Group (ASX: APA) shares are up 22.5% after announcing that it has received a $13 billion takeover offer.

The Challenger Ltd (ASX: CGF) share price is currently down 2.5% after giving investors a presentation.