Banks stocks tumbled after the government yesterday, 8 November 2016, announced that it is banning use of Rs 500 and Rs 1,000 notes, in its fight against the corruption, fake currency and black money. Among private sector banks, RBL Bank (down 2.23%), Federal Bank (down 1.3%), Yes Bank (down 0.39%), City Union Bank (down 2.6%), IndusInd Bank (down 0.84%) and Axis Bank (down 0.62%), edged lower. Kotak Mahindra Bank rose 1.59%. ICICI Bank fell 0.58%. The bank clarified after market hours yesterday, 8 November 2016, on recent media reports regarding cyber-attacks that there was no breach incident within the control of the bank pertinent to this news item which would have required reporting. The incident reported relates only to a small segment of customers of the bank who used the other bank ATM.