Singapore shares declined on Thursday despite broader regional gains, as optimism grew over the prospects of a U.S.-Iran peace deal.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 5,004.41 and 5,039.11 throughout the day. It ended the session at 5,007.83, down 13.4 points or 0.3% compared with Wednesday's close.

Olam Group up over 8%; UMS up over 7%; AvePoint, ValueMax up over 5%; CapLand India T, Haw Par, Thomson Medical up over 3%; iFast, Genting Sing, YZJ Shipbldg up over 1%.

On the corporate front, shares of Olam (SGX:VC2) surged nearly 8% at the close as it secured the remaining regulatory approval needed for the proposed sale of its 44.58% stake in Olam Agri Holdings to Saudi Agricultural & Livestock Investment.

Beng Kuang Marine (SGX:BEZ) closed over 3% higher as it secured SG$55.9 million worth of contracts during the first half of the year.

Meanwhile, Keppel DC REIT's (SGX:AJBU) shares were up over 1% at the close as its distribution per unit jumped 13% during the first quarter of 2026 to SG$0.02833 from SG$0.02503 a year earlier.