According to SEC 13F filings, 3 institutions hold JHG, including Trian Fund, Trian Fund, Trian Fund.

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Who owns JHG?

Recent moves on JHG

Fund	Signal	Value	Date
Trian Fund	HOLD	SC 13D/A	2026-06-30
Trian Fund	HOLD	SC 13D/A	2026-06-18
Trian Fund	HOLD	SC 13D/A	2026-05-14

Trian Fund updated its position in JHG for SC 13D/A. An institutional move publicly disclosed to the SEC.

Source: SEC 13F filings. Updated Jul 18, 2026.