Billionaire Julian Robertson died more than three years ago, but there are still new hedge funds being launched that can trace their lineage back to his legendary Tiger Management. One of the biggest, soon-to-be additions to the Tiger family tree is Daniel Senft's NX1 Capital, which is set to launch in January with at least $1 billion. Senft, the former head of public equities at Philippe Laffont's Coatue, has begun making key hires, including an old coworker, a person familiar with the firm