Upbeat economic data lifted US markets to an almost four-year high last week and higher European stocks reflected signs of growing stability in the euro zone.
Brent crude is holding above US$126 a barrel on Monday, with prices supported by continued concerns over supply disruption from Iran.
A bullish oil market is usually positive for regional petrochemical stocks, with higher crude prices improving producers' margins.
Turnover on Saudi Arabia's bourse hit a five-year peak on Sunday, reaching SAR18bn (US$4.80bn), as money poured in to lift the kingdom's benchmark to a new three-and-a-half year high.
"We have very good visibility in terms of investments in Saudi Arabia, with government spending and capital expenditure... that's why a lot of money has shifted there," says Sebastien Henin, portfolio manager at The National Investor.
Qatar's market is lacking short-term catalysts, while UAE bourses are seen extending losses as investors lock in recent gains. Dubai's index has fallen 5.3 percent since March 5's 16-month high.
Dubai's Arabtec said it has no plans to renew talks with Abu Dhabi state fund Aabar Investments about a taking a stake in the builder because its funding needs have eased.
The Abu Dhabi government-owned fund recently raised its stake in Arabtec to 5 percent, fueling speculation it may be interested in a larger share.
"They have to time the way they will increase their stake but 5 percent looks too small. Their portfolio usually consists of decent stakes in companies," Henin adds.