The document provides a market summary of key Indian stock indices and sector performances for April 20, 2010. It notes that markets opened lower due to weak global cues but recovered partially in the latter half due to gains in banking stocks. It expects continued volatility in the coming session due to an upcoming RBI policy announcement. On technical charts, the indices are in an oversold position and may see further recovery or declines depending on whether certain resistance and support levels are breached.