Canadian National’s (CNI) top line is bolstered by its strong segmental performance. The company’s efforts to expand and upgrade its fleet are praiseworthy. However, rising operating expenses and weak liquidity are hurting the company’s bottom line.Factors Favoring CNICanadian National’s top line is benefiting from robust segmental performance. The increase in volumes across its segments, such as intermodal, grain, fertilizer, petroleum and chemicals, highlights CNI’s effective network management and abilit ...