| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| TRIAN FUND MANAGEMENT, L.P. | 21% | +0.85% | $1,417,161,066 | 31,867,800 | 0% | TRIAN FUND MANAGEMENT, L.P. | 21 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC | 5% | $261,156,985 | 7,875,663 | Millennium Management LLC | 12 May 2025 | |||
| Capital Research Global Investors | 4.5% | $238,947,080 | 7,205,883 | Capital Research Global Investors | 30 Sep 2024 | |||
| MASSACHUSETTS MUTUAL LIFE INSURANCE CO | 0.1% | $412,815 | 9,283 | MASSACHUSETTS MUTUAL LIFE INSURANCE CO | 21 Dec 2025 |
As of 30 Sep 2025, 411 institutional investors reported holding 139,476,824 shares of JANUS HENDERSON GROUP PLC - Ordinary Shares, $1.50 per share par value (JHG). This represents 90% of the company’s total 154,698,058 outstanding shares.
The largest institutional shareholders of JANUS HENDERSON GROUP PLC - Ordinary Shares, $1.50 per share par value (JHG) together control 76% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| TRIAN FUND MANAGEMENT, L.P. | 21% | 31,867,800 | 0% | 35% | $1,418,435,778 |
| BlackRock, Inc. | 11% | 16,376,039 | -4.7% | 0.01% | $728,897,498 |
| VANGUARD GROUP INC | 8.9% | 13,819,977 | -1.7% | 0.01% | $615,127,177 |
| MILLENNIUM MANAGEMENT LLC | 4.4% | 6,851,082 | +20% | 0.24% | $304,941,660 |
| DIMENSIONAL FUND ADVISORS LP | 4.3% | 6,708,910 | -6% | 0.06% | $298,616,275 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 3.4% | 5,204,670 | +2% | 0.04% | $231,659,862 |
| AQR CAPITAL MANAGEMENT LLC | 3.1% | 4,800,028 | +30% | 0.14% | $213,649,244 |
| STATE STREET CORP | 2.9% | 4,511,890 | -1.4% | 0.01% | $200,824,224 |
| Capital Research Global Investors | 2.4% | 3,744,607 | 0% | 0.03% | $166,672,458 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5% | 2,271,858 | +1.5% | 0.01% | $101,138,552 |
| MORGAN STANLEY | 1.3% | 2,081,626 | +4.1% | 0.01% | $92,653,198 |
| NORTHERN TRUST CORP | 1.3% | 2,079,632 | -6.4% | 0.01% | $92,564,419 |
| ARIEL INVESTMENTS, LLC | 1.3% | 2,044,802 | +0.38% | 0.97% | $91,014,137 |
| Clark Capital Management Group, Inc. | 1.2% | 1,829,676 | +101% | 0.51% | $81,438,886 |
| Fisher Asset Management, LLC | 1.2% | 1,807,154 | +17% | 0.03% | $80,436,423 |
| Allianz Asset Management GmbH | 1.1% | 1,767,657 | +5.7% | 0.1% | $78,678,413 |
| Qube Research & Technologies Ltd | 0.94% | 1,460,756 | -21% | 0.09% | $65,018,250 |
| PRINCIPAL FINANCIAL GROUP INC | 0.94% | 1,460,167 | -13% | 0.03% | $64,992,033 |
| GOLDMAN SACHS GROUP INC | 0.87% | 1,348,991 | +5.9% | 0.01% | $60,043,590 |
| CITADEL ADVISORS LLC | 0.82% | 1,264,759 | -21% | 0.05% | $56,294,423 |
| Capital World Investors | 0.78% | 1,200,041 | 0% | 0.01% | $53,413,825 |
| UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 0.66% | 1,013,534 | -18% | 0.01% | $45,112,400 |
| Bank of New York Mellon Corp | 0.61% | 948,142 | -4.4% | 0.01% | $42,201,800 |
| FIRST TRUST ADVISORS LP | 0.55% | 857,452 | -8.4% | 0.03% | $38,165,188 |
| Invesco Ltd. | 0.55% | 849,264 | -30% | 0.01% | $37,800,741 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 693,885 | $33,052,958 | +$8,083,373 | $47.57 | 18 |
| 2025 Q3 | 139,476,824 | $6,208,118,227 | -$98,689,422 | $44.51 | 411 |
| 2025 Q2 | 142,414,348 | $5,531,121,444 | -$35,959,206 | $38.84 | 391 |
| 2025 Q1 | 143,639,571 | $5,190,041,100 | -$43,085,388 | $36.15 | 412 |
| 2024 Q4 | 143,551,104 | $6,105,375,966 | +$135,453,764 | $42.53 | 399 |
| 2024 Q3 | 145,654,447 | $5,546,482,329 | -$4,503,267 | $38.07 | 382 |
| 2024 Q2 | 146,253,548 | $4,930,326,767 | -$36,790,174 | $33.71 | 332 |
| 2024 Q1 | 147,165,936 | $4,839,539,578 | +$55,806,366 | $32.89 | 313 |
| 2023 Q4 | 145,567,479 | $4,388,378,008 | +$39,295,615 | $30.15 | 297 |
| 2023 Q3 | 144,483,742 | $3,730,512,936 | +$25,975,993 | $25.82 | 288 |
| 2023 Q2 | 143,248,724 | $3,902,584,363 | +$77,856,519 | $27.25 | 284 |
| 2023 Q1 | 140,778,717 | $3,748,708,791 | +$180,939 | $26.64 | 280 |
| 2022 Q4 | 140,720,003 | $3,310,089,650 | -$18,038,616 | $23.52 | 270 |
| 2022 Q3 | 141,620,175 | $2,877,200,424 | +$38,358,373 | $20.31 | 248 |
| 2022 Q2 | 138,952,739 | $3,266,099,226 | +$211,739,681 | $23.51 | 259 |
| 2022 Q1 | 130,457,031 | $4,568,866,663 | +$63,595,740 | $35.02 | 268 |
| 2021 Q4 | 128,117,503 | $5,372,639,064 | +$1,026,502,852 | $41.94 | 279 |
| 2021 Q3 | 103,501,277 | $4,277,888,126 | -$54,834,385 | $41.33 | 264 |
| 2021 Q2 | 104,953,881 | $4,072,779,989 | -$25,267,934 | $38.81 | 248 |
| 2021 Q1 | 106,177,251 | $3,306,903,484 | +$587,131,719 | $31.15 | 247 |
| 2020 Q4 | 117,976,657 | $3,834,287,379 | -$177,146,964 | $32.51 | 231 |
| 2020 Q3 | 123,422,181 | $2,680,327,684 | -$284,245,351 | $21.72 | 187 |
| 2020 Q2 | 137,555,108 | $2,910,935,620 | +$40,897,436 | $21.16 | 219 |
| 2020 Q1 | 136,093,391 | $2,084,930,470 | +$4,665,772 | $15.32 | 201 |
| 2019 Q4 | 134,774,080 | $3,295,099,784 | -$2,578,401 | $24.45 | 209 |
| 2019 Q3 | 134,130,235 | $3,012,165,352 | +$30,025,482 | $22.46 | 201 |
| 2019 Q2 | 132,854,370 | $2,842,266,519 | +$213,755,630 | $21.40 | 193 |
| 2019 Q1 | 123,055,272 | $3,071,962,911 | +$131,551,980 | $24.98 | 186 |
| 2018 Q4 | 117,878,394 | $2,441,042,275 | +$94,027,722 | $20.72 | 180 |
| 2018 Q3 | 112,749,679 | $3,036,958,061 | +$105,234,395 | $26.96 | 183 |
| 2018 Q2 | 109,195,138 | $3,353,151,206 | +$197,048,854 | $30.73 | 188 |
| 2018 Q1 | 102,699,585 | $3,396,816,524 | +$175,880,741 | $33.09 | 188 |
| 2017 Q4 | 97,114,787 | $3,716,025,555 | +$79,727,839 | $38.26 | 188 |
| 2017 Q3 | 95,041,835 | $3,311,123,082 | -$69,759,992 | $34.84 | 176 |
| 2017 Q2 | 97,065,292 | $3,214,031,964 | +$3,208,360,967 | $33.11 | 159 |
| 2016 Q3 | 14,741 | $514,000 | $34.87 | 1 |