SYDNEY, May 17, 2026, 23:04 (AEST)
Commonwealth Bank of Australia starts Monday still off 9.4% for the past week. Shares picked up to A$159.40 on Friday, but the move wasn’t enough to make up for earlier selling, as investors pulled out and only later looked at the bank’s growth.
CBA dropped 10.4% on Wednesday, its biggest one-day percentage fall ever. The slump came after a trading update landed alongside federal budget moves to limit tax breaks for property investors, including negative gearing, which allows landlords to offset rental losses against other taxable income. The point now isn’t just how much CBA fell. Anna Milne, deputy portfolio manager at Wilson Asset Management, told ABC that CBA’s high valuation meant any downside risk to earnings could “shock the share price.” ABC News
ASX 200 ends week lower, next move due Monday open. The S&P/ASX 200 edged down 0.1% to 8,631 Friday, ending the week off 1.3%. Regular cash market hours are 09:59:45 to 16:00 in Sydney.
CBA’s latest numbers landed mixed for investors. The bank posted unaudited cash net profit after tax of roughly A$2.7 billion for the March quarter—off 1% from the average in the first half, but up 4% year on year. Net interest income, which is what CBA earns from lending after covering funding costs, added 1%. Operating income didn’t move. The CET1 capital ratio stood at 11.6%, clearing the APRA minimum of 10.25%.
CBA flagged fresh risk in credit, boosting its forward-looking collective provisions by A$200 million. Loan impairment expense came in at A$316 million. Personal-loan arrears were up 30 basis points, or 0.30 percentage point. CEO Matt Comyn said, “Conflict in the Middle East is disrupting critical supply chains and contributing to global uncertainty.”
Bank stocks fell alongside the sector after the news. Westpac dropped 3%, National Australia Bank lost 2.6% and ANZ eased 1.65% on Wednesday, Reuters reported. Analysts said the budget’s property-tax changes could slow mortgage credit growth.
Valuation drew attention from analysts. Nathan Zaia, a senior equity analyst at Morningstar, pointed out CBA’s forward price-to-earnings ratio was about 24, saying, “valuation multiples are difficult to reconcile with a mid-single-digit earnings growth outlook.” Morningstar
RBA’s cash-rate target stays at 4.35%, effective May 6, while rates and the bank tape remain in focus this week. The central bank’s calendar lists the minutes from its May monetary policy meeting for Tuesday, 11:30 a.m. AEST. Banks can see a boost to margins from higher rates, but the same move hurts borrowing power and can mean more borrowers falling behind.
This isn’t all one way. If the housing tax changes end up softer, arrears stay in check or deposit margins improve, last week’s drop might look more like a valuation reset than a warning for the sector. On the other hand, if investor lending slows, bad debts pick up and the stock takes another hit, it’s still trading above some analyst fair-value calls.
CBA’s next financial results aren’t due until Aug. 12, according to the bank’s financial calendar. That leaves Monday trading, new broker calls, and housing policy news as the next signals for direction.
