Since Nike unveiled its new ad campaign with ex-NFL player Colin Kaepernick, millennial stock-trading app Robinhood says its users have been buying the sports apparel company’s stock three times more than they’re selling, up from 12% last week.

Why it matters: Nike’s stock was down 3% on Tuesday, but its bet on the political campaign seems to be paying off with young consumers — Robinhood is popular among millennials and its users are 31-years-old on average. Go deeper: Why some Nike analysts are staying silent