Singapore shares remained in the green zone on Wednesday, gaining nearly 1% at the close, despite the US and Iran conducting strikes against each other, fueling an uncertain economic outlook to the region.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 5,112.86 and 5,150.69 throughout the day. It ended the session at 5,138.24, up 40.82 points or 0.8% compared to Tuesday's close.

On the corporate front, shares of Vin's Holdings (SGX:VIN) closed over 7% lower after the company concluded its special investigation audit over irregular transactions linked to a former senior employee and confirmed fraud risk indicators.

JustCo's (SGX:JCO) shares were down over 5% at the close as its stabilizing manager, DBS Bank, purchased 642,8000 shares in the company on June 2 between the price range of SG$0.685 and SG$0.765 per share.

Meanwhile, Emerging Towns & Cities Singapore (SGX:1C0) secured a key regulatory waiver from the Singapore Exchange Regulation (SGX RegCo) regarding earlier undertakings in connection with a convertible loan agreement with Luo Shandong.