Lutnick Shapes Wall Street Dynasty With DJ and Trader Sons (1)

“Until I run the game, I’ve got everything to gain,” the hip-hop artist Kxtz once rapped.

The 20-something wasn’t kidding. His real name is Kyle Lutnick, son of the Wall Street billionaire who just became US Commerce secretary. Now, Kyle and his younger brother Brandon have been elevated to the top of their father’s sprawling financial empire.

Kyle’s Stanford University roommate gave him his start in music, according to a thank-you on one song that said the friend had already moved into the crypto world: “It’s not as fun as being a rapper, but we all have our ...