Bloomberg gets into alt data; Millennials are taking over the mortgage market; JPMorgan is hot on th

  Dear Readers, I hope everyone checks their Nikes before their weekend workouts...the sneaker explosion heard round the world was definitely the craziest story of the week (not to mention that the sportswear giant's market cap shed $1 billion in market value the next day).   If you're new to the Wall Street Insider newsletter, you can sign up here. And if you're an existing Prime subscriber, please take our reader survey here.  While not as dramatic as #shoegate, I was...