According to HDFC Securities, markets could see a bounce back today, after yesterday's selling. Markets could initially go up, post the withdrawal of the Notice by Stockholding, but quickly run into some profit taking.Metals, auto and oil & gas indices could weaken post newsflow in these sectors. FMCG index could improve. Bharat Forge, Jet Airways andSatyam could underperform, while Bank Of Baroda, ICICI Bank, Cipla, Indian Hotels, SCI could do well.One would need to be cautious and start unwinding investment positions across the board.On the technical side, a fall below 11,630 will take the Sensex to 11,460 or 11,200 levels in the coming days, before a rally emerges again. Till 11,630 is broken, the intra-day trend also remains up.