Singapore’s stock market has reached territory investors once only expected after years of gradual growth. But with the Straits Times Index (STI) trading at historically elevated valuations, the next leg of the rally may depend on something much harder to deliver: stronger corporate earnings.
The STI reached an all-time intraday high of 5,774.21 on August 11, 2026, before ending August 2.3% higher. The rally followed an 8.8% jump in July, putting increasing attention on whether company profits can justify the market’s rapidly rising valuations.
The latest assessment from Singapore Business Review highlights a key change in investor behaviour: simply owning an attractive sector may no longer be enough. Investors are increasingly looking at earnings growth, cash flow, operating efficiency and how effectively individual companies are executing their strategies.
The STI has already delivered a huge rally
The Singapore market’s surge has been remarkable.
The STI was trading around 5,755.36 at the end of August, with its 52-week range extending up to 5,774.21.
The rally has been supported by several factors, including strong earnings from Singapore’s major banks, demand for dividend-paying companies and optimism surrounding Singapore’s economic growth.
Earlier in August, Singapore raised its 2026 GDP growth forecast to 4.5%–5.5%, up from an earlier projection of 2%–4%. Reuters reported that the stronger outlook was supported partly by robust global investment in artificial intelligence and a smaller-than-expected drag from geopolitical tensions.
But rising markets create a new problem: valuation.
The market is getting expensive
According to recent market analysis, the STI was trading at roughly 16.7 times 12-month forward earnings, around two standard deviations above its 10-year average.
That doesn’t automatically mean Singapore stocks are about to fall.
Instead, it means investors may have less room to push prices higher simply by paying increasingly larger multiples for the same earnings.
DBS Group Research has therefore raised its year-end STI target to 5,850, while setting a 12-month target of 6,110. However, DBS also said further gains are likely to depend primarily on earnings rather than another major expansion in valuations.
That distinction could become critical.
If profits accelerate, today’s expensive valuations may become easier to justify.
If earnings disappoint, investors could become much less willing to pay premium prices.
Banks remain the market’s biggest engine
One reason Singapore’s benchmark has performed so strongly is its heavy exposure to banks.
DBS, OCBC and UOB have delivered strong results and attracted investors seeking both earnings growth and dividends. The three banks now represent nearly 60% of the STI’s total market capitalisation, according to recent reporting.
That concentration has helped drive the index higher — but it also creates a potential vulnerability.
When the banks perform well, the STI receives a powerful boost.
If banking profits or valuations weaken, the impact on the benchmark could be disproportionately large.
Investors are rotating into property
The latest market data also points to an interesting shift.
During August, institutional investors moved toward Singapore property developers, with S$124.4 million in net inflows into real estate excluding REITs. City Developments, Hongkong Land and UOL accounted for roughly 95% of that improvement, according to Singapore Business Review’s analysis of SGX data.
All three companies reported resilient first-half results while continuing to trade at discounts to book value.
That rotation comes after a prolonged period in which Singapore’s banks dominated investor attention.
Small and mid-cap stocks are getting noticed
The rally isn’t entirely concentrated in blue chips.
Recent SGX data shows growing activity among smaller companies, while investors have increasingly looked beyond the STI’s biggest constituents.
DBS said a new Singapore-focused ETF scheduled to list on September 3 could potentially bring additional liquidity to small- and mid-cap stocks if it receives a strong reception.
That could be important for a market that has historically been criticized for limited liquidity and relatively low valuations outside its biggest companies.
But institutional money is still leaving some sectors
There is another side to the story.
Singapore Business Review reported that cumulative institutional flows remained positive in some areas but continued to show substantial outflows from financial services, REITs and telecommunications, while industrials and technology attracted cumulative inflows. Overall cumulative net outflows increased to around S$1.9 billion by the end of August, from approximately S$1.3 billion at the end of July.
That suggests the market rally is not necessarily being driven by indiscriminate buying.
Instead, investors are becoming more selective about where they expect earnings and shareholder returns to come from.
So, is Singapore’s stock rally running out of steam?
Not necessarily.
In fact, some fund managers remain bullish.
The Straits Times reported that Singapore equities had gained about 23% in 2026 by mid-August and were heading toward a fifth consecutive quarter of gains. Some investors argued that the market could continue rising because of Singapore’s economic resilience, strong corporate balance sheets, dividend yields and growth in areas such as wealth management and AI-related infrastructure.
But other investors have become more cautious.
Fidelity International said valuations had reached their highest levels since the global financial crisis and that Singapore had become the most expensive market in ASEAN.
That creates a fascinating divide:
The bulls see stronger earnings ahead.
The bears see a market that has already priced in much of the good news.
The bigger test is coming
Singapore’s stock market has already demonstrated that it can reach record territory.
The next challenge is proving that corporate earnings can keep up.
With valuations elevated, investors are likely to pay much closer attention to whether companies can deliver sustainable profit growth, stronger cash generation, reliable dividends and disciplined capital allocation.
In other words, Singapore stocks may still have room to climb — but the market is becoming less forgiving.
The era when simply buying the right sector could generate easy gains may be fading.
Now, companies may have to earn their way to the next record.
WWC ONE MEDIA J.M.D
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