New Delhi, March 13 -- Keeping its losing streak for the third straight session on Friday, March 13, State Bank of India (SBI), the country's largest bank, dropped another 3% to the day's low of Rs.1,052.60 apiece as investor concerns grew that rising bond yields could put pressure on banks' treasury portfolios, given that state-owned banks maintain large holdings of government securities.

Today's fall has not only pushed the stock to a four-week low but has also brought the company's market capitalisation below Rs.10 lakh crore. The 3% drop in the stock has eroded about Rs.30,090 crore from the bank's market value, bringing it down to Rs.9,71,549 crore.

Taking the previous close of Rs.1,085.20 per share into account, the market capital...