Key TakeawaysWalmart shares were slightly higher Wednesday morning after hitting a new record high yesterday following a strong earnings report from the retail giant.The stock formed a shooting star on Tuesday, a reversal candlestick pattern that appears after an extended uptrend. The pattern formed on the highest daily volume since late September, possibly indicating buying exhaustion.Investors should watch major support levels on Walmart's chart around $81, $71, and $61.A bars pattern projects a price tar ...