The Persistence of Profitability among Firms in the Food Economy
计算并分析了食品经济中行业、企业特定和公司母公司效应对企业盈利能力的持续性，发现行业内的利润比公司内更持久，零售超市部门的利润相对稳定。
Abstract The persistence of industry, firm‐specific, and corporate‐parent effects on firm profitability in the food economy are calculated and further analyzed within its four major sectors: food processing, wholesale grocery, retail supermarket, and restaurant. Profits are more persistent within an industry than within a corporation. The retail supermarket sector has had stable profits as has individual retail supermarket firms relative to the other three sectors.