The MerVal index of the leading 12 stocks climbed 0.78 percent to 1,621.48 points, accumulating a gain of 17.9 percent so far this year. Volume was a modest 68.6 million pesos ($22.9 million).
"We had a quiet day until the Fed announced the rate increase but since it was expected, the market reacted through banking shares," said Francisco Marra of Bull Markets Brokers in Buenos Aires. The Federal Reserve raised US interest rates by a quarter percentage point to 4.00 percent, the highest in four years.
Investors picked up low-cost bank shares on expectations of improved third-quarter earnings.
Market leader Group Financiero Galicia climbed 3.08 percent to 2.34 pesos and Banco Hipotecario soared 6.84 percent to 12.50 pesos.
Most Argentine firms are expected to report their quarterly earnings next week.