DBS, OCBC, and UOB dominate with combined market cap exceeding SGD 180 billion and an outsized share of the Straits Times Index.

Singapore's three largest domestic banks—DBS Group Holdings, Oversea-Chinese Banking Corporation (OCBC), and United Overseas Bank (UOB)—collectively controlled approximately 60% of total banking assets in Singapore as of 2024, cementing their position as the dominant force in the city-state's financial system and equity markets. With a combined market capitalization exceeding SGD 180 billion, these three institutions account for roughly 50% of the Straits Times Index (STI), making their performance a primary determinant of Singapore's benchmark equity performance.

The Big Three's Asset Dominance and Market Weight

The concentration of assets among DBS, OCBC, and UOB reflects both the maturity of Singapore's banking sector and the structural advantages enjoyed by its largest incumbents. As of 2024, the trio held approximately 60% of total banking assets in Singapore, a share that has remained broadly stable over recent years. This dominance extends well beyond balance-sheet metrics. DBS is Southeast Asia's largest bank by assets, and all three institutions rank among Singapore's most valuable brands.

Combined market capitalization for the three banks exceeded SGD 180 billion in 2024, representing roughly half of the STI's total weighting. This outsized index presence means that any material shift in the banks' fortunes—whether from interest rate policy, credit cycles, or shareholder returns—directly drives the performance of Singapore's equity benchmark. For institutional investors benchmarked to the STI, the Big Three are effectively a mandatory allocation.

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2024 Profitability: Record Earnings and Fee Income Growth

The 2024 financial year was a record-breaker for the Big Three, powered by robust growth in fee income—particularly from wealth management—and higher trading gains. DBS reported a record net profit of SGD 11.41 billion, a year-on-year increase of 11%, with return on equity (ROE) reaching 18%, among the highest for any developed-market lender globally. Total income for DBS reached SGD 22.3 billion, underpinned by the bank's extensive digitalization efforts, which include over 1,500 AI models deployed across 370 use cases.

All three banks achieved strong growth in fee income during 2024. OCBC led the pack among the three with a 22.4% increase in net fee and commission income, followed by DBS at 17.5% and UOB at 7.3%, based on full-year 2025 comparisons that reflected sustained momentum from 2024. Net interest income remained broadly stable across the sector, as a rebound in loan growth effectively offset the compression in net interest margins (NIM) that accompanied the shift toward lower interest rates. OCBC's NIM compressed by 25 basis points, yet double-digit fee growth and higher trading income held total revenue steady. DBS's wealth-management fee income alone rose 45% year-on-year.

DBS's ROE of 18% in 2024 placed it well ahead of peers; OCBC's ROE for the comparable period was 12.6%, while UOB's stood at 12.3% (based on first-half 2025 data reflecting the trend). These returns, while divergent, remain healthy by regional standards and reflect the banks' diversified earnings bases spanning Singapore, Greater China, and Southeast Asia.

Capital Strength and Dividend Policies

The Big Three's capital positions strengthened considerably during 2024, providing ample headroom for increased shareholder distributions. As of end-December 2024, the average Common Equity Tier 1 (CET1) ratio for the three banks stood at 15.3% on a Basel III fully phased-in basis, up from 14.6% a year earlier. On a transitional basis, the figure was 16.5%. The improvement was driven largely by strong retained earnings and the capital-positive impact of final Basel III rules implemented in Singapore.

This capital strength enabled a meaningful step-up in shareholder returns. DBS increased its dividend payout ratio to 55% in 2024, up from 49% in 2023. The bank also announced a SGD 3 billion share buyback program in November 2024 and introduced a capital-return dividend of SGD 0.15 per quarter for 2025 through 2027, on top of a quarterly ordinary dividend of SGD 0.60. OCBC raised its payout ratio to 60%, up from 53% in 2023, while UOB maintained its payout ratio at 50%. Moody's Research has indicated that dividend payouts for the three banks could increase further to a range of 60% to 70% in 2025.

Payout Ratio (%)Source: Orionmano Industries

Looking ahead to 2025 and 2026, the banks face continued margin pressure from the lower interest rate environment. However, the structural drivers that underpin their dominance remain firmly in place. Growing fee income from wealth management and treasury activities, regional diversification across Asia, strong capital buffers, and a demonstrated commitment to shareholder returns through dividends and buybacks position the Big Three to maintain their outsized role in Singapore's financial system and deliver steady performance over the medium term. With Moody's assigning Aa1 ratings with stable outlooks to all three institutions, the sector's credit profile remains among the strongest in Asia.