Revolve’s Instagram/fashion IPO, JetBlack concierge takes on Amazon Prime, and Germany’s Aldi fires up the US grocery wars

Summary: The pioneer of social media influencer marketing, Revolve shares surged to become the 2nd best public offering stock performance of 2019 so far. JetBlack is the text-based online concierge club that just revealed key numbers as it takes on Amazon Prime (it’s a Walmart company). And Germany’s chain Aldi opens up shop outside of Walmart’s headquarters as it adds a new front to the epic US grocery wars.