Singapore shares sank further on Wednesday, tracking regional losses as an overnight tech stock sell-off on Wall Street impacted regional markets.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 4,372.64 and 4,417.47 throughout the day. It ended the session at 4,417.12, down 5.60 points or 0.13% compared to Tuesday's close.

Shares of CapLand India Tr, SIA Engineering up over 2%; YZJ Shipbldg, Yanlord Land down nearly 3%; iFast, ST Engineering down over 1%.

In economic news, Singapore's total retail sales increased 2.8% in September on a year-on-year basis, according to data released by the Department of Statistics Singapore.

In company news, shares of Charisma Energy Services (SGX:YSV) surged nearly 47% at the close as its special purpose vehicle, Jericho Solar, signed a standardized power purchase agreement with Ceylon Electricity Board in Sri Lanka to supply electrical energy from a 5MW power plant.

Heatec Jietong's (SGX:5OR) shares zoomed nearly 36% as it agreed to dispose of around 60% of its stake in Setya Energy to Lim Kay Cheong for SG$1.

Meanwhile, CapitaLand Investment (SGX:9CI) was down under 1% after the company exceeded its equity target for its lodging private fund, CapitaLand Ascott Residence Asia Fund II, securing around $650 million in total equity commitments and co-investments.