Fibonacci retracement levels are highly used by professional traders, as these levels acts as support resistance. This tool just needs recent high (Swing High) and recent low (Swing Low) to plot retracement levels over the nifty future charts. Price action reacts to these levels in a very accurate fashion, you will see market finding support or facing resistance around these levels. Professional traders are main traders at Fibonacci levels; they are mainly concentrated at tops and bottoms of the trend, unlike the retail traders. You can see on nifty future chart, how this index reacted to Fibonacci retracement level. Just after moving towards this level a sharp bounce was seen by gaining over 150 points in just 2 days. In this case we have found the exact bottom and this strategy will even work for the finding tops for nifty future.