The Impact of Private Label Introduction on Assortment, Prices, and Profits of Retailers*
研究了自有品牌引入如何影响零售价格和利润，并考虑了全国性品牌的品类调整。基于美国牛肉市场数据，发现低价段引入自有品牌会促使零售商进一步差异化全国性品牌并移除同段品牌，而高价段影响有限；自有品牌引入会蚕食全国性品牌需求，可能增加商店利润。
We study how introducing private‐label brands (PLs) affects retail prices and profits, accounting for assortment adjustments of national brands (NBs). We employ an event‐study framework and scanner data on the US beef market. When a PL is added to the low‐priced market segment, we find that retail stores further differentiate NBs from the PL and remove same‐segment NBs. When a PL is added to the high‐priced segment, however, NB assortment changes are limited. PL introduction and PL‐driven NB assortment changes impose small price effects on NB, but strongly cannibalize NB demand and steer consumers toward PLs, likely increasing store profits.