SBI shares touch new peak in flat marketOur Banking Bureau / Mumbai March 15, 2006The shares of State Bank of India touched an all-time high today after foreign investors bought large blocks at a 15 per cent premium to the opening price on the Bombay Stock Exchange. The scrip rose as much as 5.2 per cent to Rs 976.90, before ending at Rs 954.60, up 2.8 per cent.Limited by investment caps, foreign funds used a separate trading window to buy nearly 3.5 million SBI shares at Rs 1,070.The shares of SBI