S&P Cuts ASX Credit Rating Amid Governance and Risk Management Concerns

S&P Global Ratings has downgraded the Australian Securities Exchange's issuer credit rating to "A+/A-1" from "AA-/A-1+", just two weeks after Australian regulators publicly flagged serious governance and risk management failures at the exchange operator.

The decision reflects a pattern of high-profile operational failures at ASX, including repeated trading outages, the collapse of its long-running CHESS replacement project, and a 2024 settlement breakdown that drew widespread scrutiny. Regulators have consistently pointed to weak internal controls and a corporate culture perceived as favoring short-term shareholder returns over the reliability of critical market infrastructure.

The Australian Securities and Investments Commission had previously raised concerns that ASX was neglecting essential system upgrades in favor of financial performance. Following a 10-month inquiry, ASIC's final report concluded that ASX had repeatedly applied short-term fixes to systemic problems rather than addressing their root causes, which were largely technology-related.

S&P echoed these concerns, cautioning that a further downgrade remains possible if the exchange's risk controls — particularly around clearinghouse operations and financial safeguards — fail to improve within the next two years. Conversely, the ratings agency indicated that completing its governance and risk management overhaul would be the most credible path toward a ratings upgrade, though it considers that outcome unlikely in the near term.

Despite the downgrade, S&P revised ASX's outlook from "negative" to "stable," citing the exchange's dominant market position and its continued importance to Australia's financial infrastructure. The long-term issue rating on ASX debt was also lowered to "A+" from "AA-."

In response, ASX reaffirmed its commitment to implementing the measures outlined in its Commitments Plan, aligned with ASIC's interim and final inquiry reports. ASX shares rose up to 1.3% following the announcement, outpacing the broader S&P/ASX 200 index, which gained 0.2%.