Security Snapshot

JANUS HENDERSON GROUP PLC - Ordinary Shares, $1.50 per share par value (JHG) Institutional Ownership

CUSIP: G4474Y214

13F Institutional Holders and Ownership History from Q3 2016 to Q1 2026

Latest Period

Q1 2026

Institutions Reporting

482

Shares (Excl. Options)

141,532,975

Price

$51.37

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Security identity
Security type / class
Equity / Ordinary Shares, $1.50 per share par value
Symbol
JHG on NYSE
Issuer context
Shares outstanding
154,080,372
Reported price per share
$51.70
Price from insider filings
$51.70
Latest holder snapshot
All holders as of 31 Mar 2026
Q1 2026
Total 13F shares
141,532,975
Total reported value
$7,264,520,514
Portfolio coverage rank
0.01%
Share change
+2,202,010
Value change
+$151,234,415
Number of holders
482
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Key facts

  • JHG - JANUS HENDERSON GROUP PLC - Ordinary Shares, $1.50 per share par value is tracked under CUSIP G4474Y214.
  • 482 institutions reported positions in Q1 2026.
  • 5 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 466 to 482 between Q4 2025 and Q1 2026.
  • Reported value moved from $6,622,238,559 to $7,264,520,514.

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 482 institutions filings for Q1 2026.

Open SEC Evidence

Security key

G4474Y214

Latest holder period

Q1 2026

13F holders

482

13D/G owners

5

CIK / CUSIP context first

Open Q1 2026 holders JHG full holder history JANUS HENDERSON GROUP PLC SEC filings JANUS HENDERSON GROUP PLC company facts JANUS HENDERSON GROUP PLC insider transactions JANUS HENDERSON GROUP PLC 13D/G history

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
5
Security
JHG
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
TRIAN FUND MANAGEMENT, L.P. 17% -19% $1,321,200,673 -$319,991,027 25,654,382 -19% Nelson Peltz 12 May 2026
BlackRock, Inc. 7.5% $596,025,335 11,602,573 BlackRock, Inc. 31 Mar 2026
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 31 Mar 2026, 482 institutional investors reported holding 141,532,975 shares of JANUS HENDERSON GROUP PLC - Ordinary Shares, $1.50 per share par value (JHG). This represents 92% of the company’s total 154,080,372 outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
71%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
TRIAN FUND MANAGEMENT, L.P. 21% 31,867,800 0% 42% $1,637,048,886
BlackRock, Inc. 9.6% 14,763,241 -15% 0.01% $758,387,713
VANGUARD PORTFOLIO MANAGEMENT LLC 3.7% 5,771,779 0% 0.02% $296,496,287
VANGUARD CAPITAL MANAGEMENT LLC 3.6% 5,555,218 0% 0.01% $285,371,549
STATE STREET CORP 2.8% 4,383,422 -0.6% 0.01% $225,176,388
DIMENSIONAL FUND ADVISORS LP 2.8% 4,268,155 -35% 0.05% $219,260,546
HBK INVESTMENTS L P 2.7% 4,230,723 2.7% $217,332,241
CITADEL ADVISORS LLC 2.4% 3,772,619 +2271% 0.14% $193,799,439
AQR CAPITAL MANAGEMENT LLC 2.2% 3,341,401 -25% 0.08% $171,647,761
Allianz Asset Management GmbH 2.1% 3,199,982 +43% 0.19% $164,383,076
GEODE CAPITAL MANAGEMENT, LLC 1.7% 2,646,011 +12% 0.01% $135,953,826
GOLDMAN SACHS GROUP INC 1.6% 2,397,234 +17% 0.02% $123,145,902
MILLENNIUM MANAGEMENT LLC 1.5% 2,336,789 +170% 0.09% $120,040,851
Qube Research & Technologies Ltd 1.5% 2,271,650 +20% 0.17% $116,694,661
NEUBERGER BERMAN GROUP LLC 1.4% 2,227,778 +7121% 0.09% $114,440,956
TIG Advisors, LLC 1.2% 1,906,107 4.7% $97,916,717
NORTHERN TRUST CORP 1.2% 1,900,848 -5% 0.01% $97,646,562
VOLORIDGE INVESTMENT MANAGEMENT, LLC 1.2% 1,796,764 +191% 0.37% $92,299,767
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.2% 1,793,383 -66% 0.01% $92,126,085
JPMORGAN CHASE & CO 1.1% 1,748,473 +242% 0.01% $89,784,088
MORGAN STANLEY 1% 1,615,664 +3.4% 0.01% $82,996,783
Quantinno Capital Management LP 0.96% 1,474,466 +44% 0.13% $75,743,344
AQR Arbitrage LLC 0.93% 1,440,631 +445% 1.2% $74,005,214
Capital World Investors 0.78% 1,200,041 0% 0.01% $61,646,106
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.72% 1,106,000 +275% 0.09% $56,815,220

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
37
Latest
Q1 2026
Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 141,532,975 $7,264,520,514 +$151,234,415 $51.37 482
2025 Q4 139,282,452 $6,622,238,559 +$3,146,446 $47.57 466
2025 Q3 139,438,956 $6,206,432,909 -$91,917,139 $44.51 414
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
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