AbbVie (ABBV) stock has gained 19.4% in the past three months compared with an increase of 8.1% for the industry. The stock has also outperformed the sector and S&P 500 index as seen in the chart below.ABBV Stock Outperforms Industry, Sector & S&P 500Image Source: Zacks Investment ResearchThe stock has also been consistently trading above its 50-day and 200-day moving averages since early July.The price increase in the past three months was mainly driven by AbbVie’s strong second-quarter results wherein it ...