Statistical arbitrage refers to quantitative trading techniques which have met the appreciation of both investors and researchers the last 30 years. This effort helps reader to familiarize with the concept of statistical arbitrage and the variety of its techniques. Moreover we employed pairs trading method of statistical arbitrage and through real-life data we put it to the test. Though there are quite a few ways to apply and exploit pairs trading, we chose a co-integration approach. In this way and combined with a specialty of the data sample used, which includes an alternation in market...