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Global Market Insights

Singapore Shares Fall 0.8% as US-Iran Tensions Rise, May 29

May 29, 2026
08:41 AM
3 min read

Key Points

Singapore's STI fell 0.8% to 4,989.19 on US-Iran tensions.

Ascent Bridge surged 50% after signing joint venture agreement with Chinese firm.

Koh Brothers Eco jumped 22% on mainboard transfer application to SGX-ST.

Oil prices advanced amid geopolitical uncertainty and mixed ceasefire signals.

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Singapore’s benchmark Straits Times Index fell 0.8% to 4,989.19 on May 28 as renewed US military strikes on Iran dampened investor risk appetite across the region. The broader market saw losers outnumber gainers 405 to 248. However, individual stocks posted sharp gains on corporate announcements, signaling selective strength in the market.

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Market Retreat on Geopolitical Risk

The STI lost 39.61 points as regional tensions escalated. The index ranged between 4,978.80 and 5,035.58 throughout the session. Across the broader market, 2 billion securities worth S$2.8 billion changed hands. Banks all finished lower. DBS slipped 0.1% to S$61.93, OCBC lost 0.9% to S$23.16, and UOB fell 0.1% to S$37.69.

Ascent Bridge Zooms 50% on Joint Venture Deal

Ascent Bridge (SGX:AWG) shares surged over 50% after the company signed a cooperation framework agreement with Scinosen (Shenzhen) Gene Industry Development to establish a joint venture in Singapore. The stock closed at S$0.39, up S$0.06 from the previous session. This corporate deal provided a bright spot amid the broader market decline.

Koh Brothers Eco Jumps 22% on Mainboard Transfer

Koh Brothers Eco Engineering (SGX:5HV) shares surged nearly 22% after the company submitted an application to transfer from Catalist to the SGX-ST mainboard on May 26. The stock closed at S$0.161, up S$0.029. A mainboard transfer typically signals improved credibility and access to capital for smaller-cap companies.

Oil Markets Remain Volatile on Geopolitical Tug of War

Oil prices advanced following a drop of more than 5% on Wednesday. Analysts noted the market remains caught between escalation fears and ceasefire hopes. Recent military attacks cast doubt on earlier reports of progress in negotiations, keeping energy markets unsettled and adding pressure to regional equities.

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Final Thoughts

Singapore’s market fell 0.8% on US-Iran tensions, but corporate news drove selective gains. With Meyka rating the Japanese engineering stocks covered here at B+ grades, the data points to a mixed near-term outlook as geopolitical risk weighs on sentiment.

FAQs

Why did Singapore shares fall on May 28?

US military strikes on Iran escalated regional tensions, dampening investor risk appetite and causing the STI to decline 0.8% to 4,989.19.

Which stocks gained despite the market decline?

Ascent Bridge surged 50% after announcing a joint venture deal, while Koh Brothers Eco jumped 22% following its mainboard transfer filing.

How did Singapore banks perform?

All three major banks declined: DBS fell 0.1%, OCBC dropped 0.9%, and UOB slipped 0.1% on the trading day.

Disclaimer:

The content shared by Meyka AI PTY LTD is solely for research and informational purposes.  Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.

About Author

Author

Danny Kontos

Co Founder

Danny Kontos has been a stock investor since 2007 and co-founded Meyka in 2023. He keeps a small, focused portfolio and only moves when the numbers are hard to argue with. He has waited years on a single position before. Before Meyka, he ran a web hosting company and a mortgage lending platform, so he knows what a well-run business actually looks like under the hood. This article did not come from a news cycle. It came from someone who has been watching this space for a long time.

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