Yes Bank, which has taken its balance sheet size to over Rs 1,00,000 crore, depends on large corporates for 66 per cent of its business.
About 15 per cent of its portfolio comprises the mid-segment and 17 per cent belongs to small and medium enterprises (SMEs).
"Over a period of time, we are getting equally focused on SMEs and retail banking directionally. We want to see our business portfolio coming 33 per cent each from large corporates, mid-segments and SMEs," Kumar said on the sidelines of the India Engineering Sourcing Show (IESS) here.
The bank also wants to re-balance its resources of deposits.
The bank gets about 20 per cent of its deposits from the Current Account Savings Account (CASA).
Kumar said: "We want to take CASA from 20 per cent to 35-40 per cent in the next 12-18 months."
CASA is considered to be the most cost effective source of bank deposits since the rate of interest paid on CASA remains around 6 per cent against over 8 per cent in time deposits.
Some of the well-run peers of Yes Bank have CASA up to 40 per cent and the Rana Kapoor-led bank would also like to tap this channel.
Kumar said even though the CASA rates remain around 6 per cent, "for me, it is still cheaper replacing wholesale funding which costs between 8.5-9 per cent."
For its deposits mobilisation, Yes Bank has also tapped cost effective foreign currency resources. In all, the bank has managed to raise USD 400 million in different tranches of the swap window recently provided by the Reserve Bank.
It has also raised USD 105 million from the International Finance Corporation for lending to SMEs, Kumar said.
He said most of the SMEs which are being serviced by Yes Bank are in any case part of the value chain along with the large corporate clients of the bank. "They are the distributors/suppliers of our large corporate clients."
Some of the 'sunrise' sectors for the bank include life-sciences, information technology, pharmaceutical, FMCG and parts of engineering.
"These sectors have remained relatively insulated from the stress that is seen in the banking sector," Kumar said.