With spot iron ore prices up 40 per cent from recent lows and other base metal prices jumping in the last few weeks, investors are turning bullish on the space. Kishore Narne, associate director, head-commodity and currency, Motilal Oswal Securities Ltd, says that the real underlying demand dynamics still remains weak in the medium-term. His top metal for 2013 is nickel. Giriraj Daga, senior research analyst, Nirmal Bang Institutional Equities, says feels there has to be an improvement in demand, which he feels is unlikely at this stage.