The Saudi index climbed 0.4 percent.
Tihama Advertising was up 5.6 percent after it said it sold land in Jeddah for 33 million riyals ($8.8 million), while Saudi Fisheries gained 3.0 percent.
It is not clear whether the king's speech will announce any policy details, and he may instead simply outline his priorities in general terms. The state budget for 2016, expected to be released on Monday, is likely to give a more comprehensive idea of fiscal policy next year