Index Update: The Australian sharemarket finished lower on Tuesday as investor sentiment weakened following renewed attacks on vessels in the Strait of Hormuz, which raised fresh concerns over global trade and geopolitical risks.

The S&P/ASX 200 declined 27.10 points, or 0.31%, to 8,803.90, slipping below its 20-day moving average. Despite the day's decline, the benchmark index remains 0.29% higher over the past five trading sessions, although it is still 4.34% below its 52-week high.

Market breadth was negative, with seven of the 11 sectors ending the session in the red.

The Materials sector led the losses, falling 2.64%, followed by A-REITs (-1.34%) and Energy (-1.28%), reflecting pressure from commodity-linked stocks and broader risk-off sentiment. Utilities (-0.55%), Industrials (-0.46%), Health Care (-0.11%), and Consumer Staples (-0.03%) also closed lower.

In contrast, Information Technology emerged as the day's top-performing sector, climbing 2.01% and extending its five-day gain to 1.01%. Telecommunication Services advanced 1.58%, while Financials (+1.25%) and Consumer Discretionary (+0.69%) also finished in positive territory.

Macro Update: Fresh tensions have emerged in the strategically vital Strait of Hormuz after an oil tanker caught fire when it was struck by an unidentified projectile off the coast of Oman. The incident has renewed concerns over the security of one of the world's busiest energy corridors, through which a significant share of global oil exports passes each day.

According to the United Kingdom Maritime Trade Operations (UKMTO), the tanker was sailing southbound near Limah, Oman, when it was hit on its port side, igniting a fire onboard. While the source of the projectile remains unknown, the attack is likely to heighten geopolitical anxieties and place the region's maritime security back under intense global scrutiny.

Top Market Movers: Among the top gainers, Netwealth Group Ltd (ASX:NWL) surged 6.73% to AUD 24.43, followed by WiseTech Global Ltd (ASX:WTC), which climbed 5.65% to AUD 37.37, while NextDC Ltd (ASX:NXT) gained 3.60% to AUD 13.80. On the downside, Predictive Discovery Ltd (ASX:PDI) fell 12.00% to AUD 0.66, Liontown Ltd (ASX:LTR) declined 7.55% to AUD 1.53, and Deep Yellow Ltd (ASX:DYL) dropped 6.87% to AUD 1.355.

Commodity Update: The U.S. dollar traded largely unchanged on Tuesday after recording its sharpest single-day decline since late April, as investors continued to assess the outlook for monetary policy and upcoming economic data. The euro remained broadly stable following the release of key economic indicators, while the Japanese yen stayed near a 40-year low, keeping market attention on possible intervention risks. Gold declined 0.39% to USD 4,150.50, silver fell 0.86% to USD 61.80, copper slipped 0.03% to USD 13,390.75, and Brent crude oil gained 0.38% to USD 72.26.

Our Stance: The Australian sharemarket ended Tuesday on a weaker note as escalating geopolitical tensions in the Strait of Hormuz weighed on investor sentiment, pushing the S&P/ASX 200 down 0.31% to 8,803.90. Losses in Materials, Energy and A-REITs offset gains in Information Technology and Financials, while seven of the 11 sectors closed lower. Global markets also monitored the attack on an oil tanker near Oman, raising concerns over energy supply routes. Among individual stocks, Netwealth Group, WiseTech Global and NextDC led the gains, while Predictive Discovery, Liontown and Deep Yellow were the biggest losers. Markets may remain volatile in the near term as investors closely track geopolitical developments, commodity price movements and upcoming macroeconomic data for clearer direction.

The S&P/ASX 200 declined 27.10 points in the latest trading session, forming a bearish candlestick that reflects near-term selling pressure. Despite the pullback, the broader technical outlook remains constructive. However, the index continues to trade below its 21-day Simple Moving Average (SMA), which is acting as a key dynamic resistance level and indicates that short-term momentum remains subdued. Immediate support is positioned around 8,730.60. Holding above this level would help preserve the broader bullish structure and could attract renewed buying interest, supporting a retest of recent highs and the continuation of the recovery. Conversely, a decisive break below 8,730.60 would weaken the near-term technical outlook, accelerate downside momentum, and increase the risk of a deeper corrective pullback.