Redfin $RDFN is having a rollercoaster of a rider since its IPO in July. The 4H chart below shows how price rallied from under 20 to above 33 before going into a declining channel.RDFN 4H Chart(click to enlarge)Bullish Breakout & Pullback:- We can see that price rallied from under 20 to about 27.50 in the past month.- This rally broke above the moving averages and the falling channel resistance. - We may very well see a bullish run towards the 30 level. - Price is now testing the 1st key support level around 24. - A bullish market should hold here. - But if this doesn't hold, the 22-22.25 area should hold. - If price breaks below 22, we might see it dip to 20, 19.50, or even lower.- Otherwise, if price can hold above 24, or at least above 22, there is upside at least back towards 30.