text: Citadel has poached a top quant executive from Morgan Stanley - Business Insider
  Ken Griffin's Citadel has poached a top quant executive from Morgan Stanley.
  Popick will report to chief technology officer Umesh Subramanian, who joined Citadel last year from Goldman Sachs, where he was a partner and co-head of technology.
  Quants and data scientists are among the most coveted personnel on Wall Street, as hedge funds focused on systematic strategies have grown substantially in recent years— even when performance has faltered.
  And hedge funds aren't just fighting with rival asset managers, they're at times getting outbid by buzzy Silicon Valley start-ups.