11 November 2025
London – Janus Henderson announces the appointment of Cassie Herlihy who joins the firm today as a portfolio manager on the UK Small Cap Equities team, led by Indri van Hien. Based in London, Cassie will be named on all of the firm’s UK Small Cap Equity portfolios and report to Indri.
Cassie was previously at Gresham House where she was part of an investment team managing multiple portfolios focussed exclusively on UK Small Caps. She co-managed a UK smaller companies fund where she built a strong investment track record consistently delivering results ahead of peers. Prior to that she held investment banking roles at both Citi and Investec. She holds an MSc in the Psychology of Economic Life from the London School of Economics and Political Science, and a BA in Geography from the University of Cambridge.
Indri van Hien, Portfolio Manager on the UK Equities team at Janus Henderson Investors, said:
“I’m thrilled to welcome Cassie to the team. Her appointment reflects our ongoing dedication to high-conviction, bottom-up stock-picking, which remains at the heart of our investment philosophy. Her collaborative approach and proven ability to deliver outperformance make her an excellent addition to the team”.
Lucas Klein, Head of EMEA & APAC Equities at Janus Henderson Investors, added:
“Cassie brings an extensive knowledge of UK Small Cap equities, award-winning investment management skills and a remarkable track record which will further enhance the team’s capabilities. At Janus Henderson Clients Come First – Always and Cassie’s appointment underscores our continued commitment to building a high-performing team with a shared culture and process that prioritises long-term value creation for clients”.
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Janus Henderson Investors
Nicole Mullin, Director of Media Relations
E: nicole.mullin@janushenderson.com
T: +44 (0) 20 7818 2511
Notes to editors
Janus Henderson Group is a leading global active asset manager dedicated to helping clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class service.
As of September 30, 2025, Janus Henderson had approximately US$484 billion in assets under management, more than 2,000 employees, and offices in 25 cities worldwide. The firm helps millions of people globally invest in a brighter future together. Headquartered in London, Janus Henderson is listed on the NYSE.
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