Singapore shares may open tad lower on Tuesday after Wall Street indices were mostly flat as investors chose to wait on the sidelines amid uncertainty over the euro zone’s debt woes and as the year-end approaches. Singapore’s benchmark Straits Times Index <.FTSTI> rose 0.28% on Monday to 3,181.41 points.

Here are some stocks and factors to watch:

Container shipping firm Neptune Orient Lines (NEPS.SI) may be in focus after it said its container shipping volumes from Oct 16-Nov 12 rose 6% from a year ago due to higher volumes carried on the intra-Asia and Asia-Europe trade lanes.

Renewable energy firm Think Environmental (THEC.SI) said it has entered into an agreement with Mornington Offshore that would allow it to buy the rights to gold mines in Mali, in western Africa.

Mobile handset distributor Spice i2i (SPIC.SI) said it will buy Thailand’s NewTel Corp, a distributor of mobile phones. The acquisition will allow Spice i2i to expand its market share to countries like Thailand, Vietnam, Myanmar, Cambodia and Laos, it said. It was reported the company paid US$92 million ($120 million) for the acquisition.

Devotion Energy (DEVO.SI), which makes industrial boilers, said it has appointed Li Zuqin as its chief executive officer with immediate effect, replacing Chang Houchun.