Now, key money managers have jumped into Horizon Therapeutics Public Limited Company (NASDAQ:HZNP) headfirst. Alyeska Investment Group, managed by Anand Parekh, assembled the most outsized position in Horizon Therapeutics Public Limited Company (NASDAQ:HZNP). Alyeska Investment Group had $52 million invested in the company at the end of the quarter. Christopher James's Partner Fund Management also made a $48.1 million investment in the stock during the quarter. The other funds with new positions in the stock are Brandon Haley's Holocene Advisors, Richard Driehaus's Driehaus Capital, and Bhagwan Jay Rao's Integral Health Asset Management.