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STI 5,700: Three Banks Drive Record, Concentration Risk Grows
DBS, OCBC, UOB now 58% of STI after record earnings. A 10% bank pullback would erase 5.8% from the index. Here's how to manage the risk.
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The Straits Times Index closed above 5,700 for the first time in late July 2026, pushed there by a trio of record bank earnings. DBS Group crossed S$6 billion in quarterly income for the first time, net profit reached nearly S$3.1 billion, and the bank declared a dividend of S$0.81 per share, up from S$0.75 a year ago. Oversea-Chinese Banking Corporation posted a record quarterly profit of more than S$2.2 billion, a 22% increase, and raised its interim dividend by 14.6%. United Overseas Bank reported double-digit net profit growth in the second quarter and lifted its interim dividend to S$0.88 from S$0.85.
The three banks together accounted for nearly 58% of the STI as of Aug. 7, according to index constituent data. That means passive investors have roughly 58 cents of every dollar in the index concentrated in the banking sector. A sector-specific shock – a property downturn, a spike in non-performing loans, or tighter regulation – would hit the index disproportionately.
The banks have benefited from higher interest rates, strong loan growth, and a buoyant Singapore economy. Any reversal in those tailwinds would weigh on earnings and dividends. For example, if the three banks collectively fell 10%, the STI would drop roughly 5.8%, assuming all other components held steady. That is a bigger hit than a comparable decline in a less concentrated index.