Singtel faces increased pressure following a recent network outage at its Australian subsidiary Optus, with analysts highlighting potential implications for the company’s plans to sell a minority stake in the telecom operator. On September 11, a technical fault lasting 76 minutes disrupted voice calling services across parts of Victoria, South Australia, Tasmania, and the Northern Territory. Although less severe than a previous 13-hour outage in September 2025, this interruption affected some emergency service calls, underscoring ongoing concerns about Optus’ network reliability.

Singtel shares opened at S$4.43 on September 14, down approximately 1.3 percent from the previous trading day, before partially rebounding, but continued to exhibit volatility thereafter. The share price impact of the recent disruption appears limited in the short term, with analysts noting Singtel’s diversified revenue streams, including businesses in India and digital infrastructure, help buffer the effect. However, repeated outages at Optus could undermine investor confidence and complicate the company’s efforts to attract partners for a minority stake sale.

Singtel has been exploring options to bring in an Australian partner with sector expertise since May, aiming to strengthen Optus’ operations and local footprint. Discussions with multiple potential investors are ongoing. Industry experts caution that the persistent network issues may depress valuations and deter buyers, particularly if the operator is perceived to be underinvested in critical infrastructure.

Optus has committed significant investment to improve its network. The company spent A$1.5 billion (S$1.36 billion) in the 2026 financial year ending March 31 and plans to allocate an additional A$1.5 billion toward enhancing IT resilience, cybersecurity, and overall network capabilities, according to CEO Stephen Rue. Over the past five years, Singtel has invested more than A$9.3 billion in Optus’ network infrastructure. Analysts suggest that the need for increased capital expenditure could pressure Singtel’s near-term profit margins, potentially prompting a focus on cost efficiencies to boost earnings before interest and tax margins.

While service disruptions are a known risk across the telecommunications sector—with competitors Vodafone and Telstra also experiencing outages this year—Optus’ repeated faults have drawn regulatory and public scrutiny. The company reported that it quickly identified the hardware issue on September 11 through network monitoring systems and mobilized technical teams to restore service.

Market observers warn that prolonged outages similar to the 2025 event could lead to reputational damage, increased regulatory fines, and legal costs, all of which might weaken Singtel’s negotiating position in a minority stake sale. A local Australian partner is seen as politically advantageous, demonstrating domestic ownership of critical infrastructure and allowing Singtel to share investment risks while retaining potential returns.

Singtel acquired Optus for A$17 billion in 2001 and reportedly sought around A$16 billion for the operator in 2024. Analysts suggest that the company may now have to accept a lower valuation for any stake sale following the network issues. Among potential investors is New Zealand infrastructure firm Morrison, though discussions remain fluid.

Despite these challenges, some experts believe the recent outage’s effect on Singtel’s share price is a temporary market reaction. The company remains committed to Optus as a core pillar, which currently accounts for roughly half of Singtel’s total operating revenue. Management anticipates that improvements in Optus’ performance and return on invested capital will materialize over the next four to five years, supporting long-term growth prospects for the group.