Fund managers raised exposure in bank stocks to a 4-month high of nearly a 33,000 crore rupees in October amid rising equities market and various steps taken by the Reserve Bank to prop the banking sector. According to the latest data available with market regulator SEBI, Mutual Fund investments in banking stocks reached 32,807 crore rupees as on October 31, accounting for 17.77 per cent of their total equity assets under management of 1.85 lakh crore rupees.