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Stocks advanced for two straight days to near 44,000 points, close to a level last seen in October 2008.
The main index, which gained 43 percent in 2017, broke a six-day rally on Friday after climbing to a nine-year high as some investors chose to lock in profits.
It has gained 12.75 percent so far in January.
The index of Nigeria's top 10 lenders advanced 3.5 percent to lead the charge.
FBN Holdings and Sterling Bank climbed the maximum 10 percent allowed. Diamond Bank , Wema Bank and Unity Bank rose more than 9 percent.