Private Label Manufacturers Association and Circana's midyear report highlights what all brands need to know The beverage category was among the top three leaders in store-brand unit growth, according to PLMA and Circana. During the six months ending June 14, store-brand unit sales edged up 0.2% while national brand unit sales dipped 0.5%, versus the year-ago period, a spread of 0.7%. Store-brand unit market share increased to 23.8%, an all-time high.