Pattern, which helps brands optimize their sales on online marketplaces, closes up 11.6% at $15.63 per share in its Nasdaq debut, after raising $300M in its IPO (Annie Palmer/CNBC)

Annie Palmer / CNBC:
Pattern, which helps brands optimize their sales on online marketplaces, closes up 11.6% at $15.63 per share in its Nasdaq debut, after raising $300M in its IPO  —  Pattern Group, one of the leading resellers on Amazon, took the plunge into the public markets Friday and saw its stock rise slightly in its Nasdaq debut.