عنوان مقاله [English]
One of the issues that always has been considered is selecting stocks for profitable investments in financial markets. If the investor decides reasonably in the stock selection, a return more than the market average could be achieved. Comparing different companies based on the industry which the company belongs to, and identifying the premier industries through analysis of their efficiency could be useful guideline for stakeholders of this field. The main purpose of this research is ranking the stock industry to help the efficiency of capital markets applying the data envelopment analysis. The nature of the model is constant return to scale and input-oriented that 67 companies in 16 industries were studied and finally 7 industries were introduced as efficient and 9 other as non-efficient. Then determining the efficiency boundary, the inefficient industries are ranking and to improve their performance, some units were introduced as reference units.