Some businesses go through cycles of expanding and contracting margins, such as basic materials names that depend on commodity prices to derive their bottom-line figures. Then, there are those who enjoy a continuous uptrend in their margins through the use of efficiency, a typical trend that dominates the technology sector with scalability and operational leverage. Then, there are those who operate in the old model and have yet to jump into the new model through technology. This is where today’s list of sto ...