Finance

Citadel has poached a top executive from Morgan Stanley in one of Wall Street's fiercest hiring battlegrounds

Ken Griffin
Ken Griffin's Citadel has poached a top quant executive from Morgan Stanley. Screenshot YouTube/Milken Institute
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Hedge-fund giant Citadel has poached a top executive from Morgan Stanley in one of the fiercest talent battlegrounds on Wall Street. 

Glen Popick, the head of fixed-income strats and a nearly two-decade veteran at Morgan Stanley, has left the investment bank for a role as the head of FICC technology at the more than $30 billion hedge fund, according to people familiar with the matter.

At Morgan Stanley, Popick led a large team of quants that develop algorithms and models to help price derivatives, manage risk, and execute trading strategies. Han Lee, an ex-RBS quant exec who joined the bank in 2015, has been promoted to replace Popick, the people said. 

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.

Representatives at Citadel and Morgan Stanley declined to comment. 

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. 

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Alex Morrell
Alex Morrell was a senior correspondent at Business Insider covering Wall Street at large.Prior to Insider he was a staff reporter at Forbes Magazine covering billionaires and their businesses. He's previously written and worked for the Associated Press, the Green Bay Press-Gazette, the Milwaukee Journal Sentinel, and the Wisconsin Center for Investigative Journalism. He's a graduate of the University of Wisconsin and holds a master's in business and economic journalism from Columbia University. Selected recent stories:How our insatiable appetite for electricity is giving rise to traders who make money from power-grid bottlenecksBehind a Wall Street headhunter's rapid ascent lie accusations of harassment and abuseSchonfeld's growing pains: Ryan Tolkin reckons with his greatest challenge yet as returns dry up at the $13 billion hedge fundHow a California hedge fund bulldozed the state's labor laws to impose some of the harshest noncompetes on Wall StreetFear and loathing on Wall Street: Inside the paranoid, hyper-competitive onslaught to prevent quant traders from defecting to rivalsMillennium has quietly minted billions off of America's passive-investing craze. Now rivals are racing to catch up.The bubble has popped on the mighty index-rebalance trade, and the overcrowded strategy is wreaking carnage across hedge fundsInside the rapid rise and fall of Coatue's quant fund: How a 23-year-old Wharton wunderkind seized power, alienated employees, and blew a $350 million opportunityFor years, Chase and Citi credit cards offered a generous, under-the-radar benefit that protected customers. And then the bots arrived.
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Dakin Campbell
Dakin Campbell was a chief correspondent on Business Insider's enterprise team until May 2026. He has covered the environmental and societal impacts of AI, the underbelly of reality TV, corporate governance battles at Goldman Sachsromantic entanglements in a Texas bankruptcy court, and the murky world of private equity fees, among others. He has won numerous journalism awards, including a Barlett & Steele and a Polk.Before joining BI in 2018, Dakin spent a decade at Bloomberg News. He’s a graduate of Cornell University and Columbia University, and once held the CFA charter — until he stopped paying dues.He can be reached on Signal at dakin.11, at his personal website, and on Twitter, Bluesky, and LinkedIn.