Australian stocks closed lower on Monday, with the S&P/ASX 200 declining by 0.32% due to losses in the A-REITs, Utilities, and Financials sectors. Top performers included St Barbara Ltd, which rose 5.68% to $0.23, Appen Ltd, gaining 5.49% to $2.69, and Atlas Arteria, up 2.77% to $4.83. On the downside, Cromwell Property Group fell 5.00% to $0.38, Growthpoint Properties Australia dropped 4.71% to $2.43, and Region Re Ltd Unit declined 3.88% to $2.11. Market volatility, measured by the S&P/ASX 200 VIX, increased 5.09% to 11.12. In commodities, Gold Futures rose 0.07% to $2,633.80 per ounce, while Crude Oil and Brent Oil edged up 0.03% each, trading at $70.62 and $73.81 per barrel, respectively. Currency movements were stable, with AUD/USD steady at 0.62, AUD/JPY rising 0.50% to 98.54, and the US Dollar Index unchanged at 107.79.