Saudi Arabia's benchmark index rose 0.9%, boosted by a 1.8% gain in Al Rajhi Bank and a 8.9% surge in Bank Al Jazira, which reported an increase in its quarterly net profit.
The Abu Dhabi index added 0.5%, bolstered by a 0.7% gain in top lender First Abu Dhabi Bank while telecoms giant Etisalat was up 0.6%.
Saudi Arabia's benchmark index closed up 0.4%, with Al Rajhi Bank rising 0.8%, extending gains from the previous session when it reported first-quarter earnings.
The kingdom's biggest Islamic lender said net profit in the three months ended March 31 rose to 3.34 billion riyals ($891 million). It made a net profit of 2.38 billion riyals in the same period a year earlier.
On Sunday, the lender reported its first quarter net profit of 3.3 billion riyals ($906.22 million), down by 7% from a year earlier as it booked 1.4 billion riyals in "precautionary" loan-loss provisions.