OSB Group’s Baa2 rating affirmed by Moody’s, outlook now stable

Moody's has affirmed OSB GROUP PLC's Baa2 senior unsecured rating and revised its outlook to stable from negative, anticipating asset quality stabilization as lower interest rates ease borrower affordability and the group maintains its market position. This affirmation comes despite an increase in problem loans to 4.2% by June 2025, as OSB reported resilient H1 2025 net income of £142.1 million and maintained strong capitalization. The stable outlook signals an improved risk profile, with potential for future upgrades contingent on sustained asset quality improvement and profitability.

Analysis

Moody's has affirmed OSB GROUP PLC’s Baa2 senior unsecured rating and, critically, revised its outlook to stable from negative, signaling a reduction in perceived downside risk. This change is predicated on the expectation that the group's asset quality will stabilize as anticipated lower interest rates ease affordability pressures on borrowers. The improved sentiment is further supported by an upgrade of the subsidiary OneSavings Bank's Counterparty Risk Ratings to A2/P-1. However, this outlook is balanced against tangible headwinds. The group's asset quality has demonstrably weakened, with problem loans projected to increase to 4.2% by June 2025, up from 2.5% at the end of 2022, driven by the higher rate environment and the group's concentration in specialist buy-to-let mortgages. Despite this, OSB Group's financial profile is viewed as resilient, underpinned by a strong Common Equity Tier 1 (CET1) ratio of 15.7% and H1 2025 net income of £142.1 million. While the annualized return on tangible assets of 0.9% is below the 1.4%-1.5% levels of 2021-2022, Moody's considers the earnings profile sufficient to absorb the anticipated credit deterioration.

Key Decisions for Investors

• For credit investors, the outlook change to stable reduces the near-term risk of a downgrade on Baa2-rated debt, making the bonds a more secure holding than previously perceived.
• Equity investors should closely monitor the trajectory of problem loans against management's guidance on interest rates, as the core investment thesis now hinges on asset quality stabilizing as expected by Moody's.
• The strong 15.7% CET1 ratio provides a substantial buffer, but investors should note it is expected to decline towards the 14% target post-Basel 3.1 implementation, which could constrain future capital distributions if profitability weakens.
• Given the explicit downgrade trigger of a 'reduced market position,' investors should track OSB's performance against competitors in the specialist lending market to ensure its franchise remains intact.