Shares of State Bank of Mysore jumped 20 per cent to Rs 547.90, State Bank of Travancore zoomed 19.99 per cent to Rs 478.90 and State Bank of Bikaner and Jaipur soared 19.99 per cent to Rs 599.60 on BSE.
All these banks hit their highest trading permissible limit for the day on the bourse.
The scrip of State Bank of India also moved up by 3.90 per cent to Rs 215.65.
India's largest lender had last month mooted the proposal for merger of its five subsidiary banks with itself and acquisition of the newly set up Bharatiya Mahila Bank.
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SBI has five associate lenders -- State Bank of Bikaner and Jaipur, State Bank of Travancore, State Bank of Patiala, State Bank of Mysore and State Bank of Hyderabad.
Among the associate banks, State Bank of Bikaner and Jaipur, State Bank of Mysore and State Bank of Travancore are listed.