Though the stock will most likely hit 840 region, it will not be without minor corrections. Even round number 800 could be a point of such a pull back. Hence longs are advised to have trailing stop loss. If trailing stops are hit, further longs can be initiated if the previous highs are broken in lower time frames, say Hourly or 4 Hour chart.
(Disclaimer: Our charts and contents are just for the purpose of analysis, learning and general discussion. Do not consider these as trading tips or investment ideas. Trading in Stocks, and Options carry risk and is not suitable for every investor. Hence it is important to do your own analysis before making any investment or trading decisions based on you personal circumstances and it is always better to take advice from professionals)