Janus Henderson Group plc (JHG)

Janus Henderson Group plc was a global active asset manager headquartered in London, with a major presence in Denver, Colorado. It was formed on May 30, 2017 through the merger of Janus Capital Group, an American mutual fund manager, and Henderson Group plc, a British firm. The Henderson business traces back to 1934, and Janus has roots in Denver beginning in 1969.

The firm managed money for institutional investors, retail clients and high net worth individuals. It offered equity, fixed income, multi-asset and alternative strategies through mutual funds, exchange-traded funds, separately managed accounts and other vehicles. It had additional offices in Jersey and in Sydney, Australia, and it served clients across North America, Europe and the Asia-Pacific region.

After the merger, Janus Henderson listed its shares on the New York Stock Exchange under the symbol JHG, and it also maintained a secondary listing in Australia. Like other traditional active managers, it faced industry-wide pressure from the shift of assets to passive products and fee compression, and it periodically reorganized its investment teams and cost base.

Trian Fund Management, led by Nelson Peltz, first invested in the company in 2020 and became a significant shareholder with representation on the board. Ali Dibadj served as chief executive officer, having taken the role in 2022.

On December 21, 2025, the company signed a definitive agreement to be acquired by an investor group consisting of Trian, General Catalyst and the Qatar Investment Authority. Under the agreement, shareholders would receive $52.00 in cash for each share, other than shares already owned or controlled by Trian.

The transaction closed on or about July 1, 2026. Janus Henderson's shares were removed from the New York Stock Exchange, a Form 25 was filed with the SEC, and the company became privately held. Management remained in place under Dibadj, and the firm kept its principal offices in London and Denver.

Trian stated that it intended to support investment in products, client service, technology including artificial intelligence, and talent after the transaction. Following the closing, the public shareholders other than Trian no longer held an interest in the company.