Microsoft Corporation's stock gapped up over 1% after announcing a revision in its deal to buy Activision Blizzard, negating its current downtrend. However, the stock sold off from its high-of-day intraday. For a new uptrend to confirm, Microsoft will need to form a higher high over the coming days. If Microsoft continues to trend lower, Tuesday’s reversal could serve as a bear trap and the steep downtrend could continue, increasing volatility in the stock market due to Microsoft’s heavy weighting within the S&P 500.