Mario Gabelli's JHG Position Overview
Mario Gabelli (via Gamco Investors, Inc. Et Al) currently holds 436,032 shares of Janus Henderson Group plc (JHG) worth $20.74 M, representing 0.20% of the portfolio. First purchased in 2017-Q2, this long-term strategic position has been held for 35 quarters.
Based on 13F filings, Mario Gabelli has maintained a strategic position in JHG, demonstrating sustained confidence in this investment. Largest addition occurred in Q2 2021, adding 154,200 shares. Largest reduction occurred in Q3 2017, reducing 817,564 shares.
Analysis based on 13F filings available since 2013 Q2
Mario Gabelli's Janus Henderson Group plc (JHG) Holding Value Over Time
Track share changes against reported price movement
Quarterly Janus Henderson Group plc (JHG) Trades by Mario Gabelli
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | +18,900 | Add 4.53% | 436,032 | $47.57 |
| Q3 2025 | -10,200 | Reduce 2.39% | 417,132 | $44.51 |
| Q2 2025 | -3,009 | Reduce 0.70% | 427,332 | $38.84 |
| Q1 2025 | -1,100 | Reduce 0.25% | 430,341 | $36.15 |
| Q4 2024 | -31,820 | Reduce 6.87% | 431,441 | $42.53 |
| Q3 2024 | -3,331 | Reduce 0.71% | 463,261 | $38.07 |
| Q2 2024 | -10,732 | Reduce 2.25% | 466,592 | $33.71 |
| Q1 2024 | -14,700 | Reduce 2.99% | 477,324 | $32.89 |
| Q4 2023 | -7,921 | Reduce 1.58% | 492,024 | $30.15 |
| Q3 2023 | -3,901 | Reduce 0.77% | 499,945 | $25.82 |
| Q2 2023 | -12,421 | Reduce 2.41% | 503,846 | $27.25 |
| Q1 2023 | -11,428 | Reduce 2.17% | 516,267 | $26.64 |
| Q4 2022 | -47,079 | Reduce 8.19% | 527,695 | $23.52 |
| Q3 2022 | +30,125 | Add 5.53% | 574,774 | $20.31 |
| Q2 2022 | +32,007 | Add 6.24% | 544,649 | $23.51 |
| Q1 2022 | +28,745 | Add 5.94% | 512,642 | $35.02 |
| Q4 2021 | -4,571 | Reduce 0.94% | 483,897 | $41.94 |
| Q3 2021 | -300 | Reduce 0.06% | 488,468 | $41.33 |
| Q2 2021 | +154,200 | Add 46.09% | 488,768 | $38.81 |
| Q1 2021 | +42,558 | Add 14.57% | 334,568 | $31.15 |
| Q4 2020 | -92,243 | Reduce 24.01% | 292,010 | $32.51 |
| Q3 2020 | -535 | Reduce 0.14% | 384,253 | $21.72 |
| Q2 2020 | -17,707 | Reduce 4.40% | 384,788 | $21.16 |
| Q1 2020 | -471 | Reduce 0.12% | 402,495 | $15.32 |
| Q4 2019 | -13,679 | Reduce 3.28% | 402,966 | $24.45 |
| Q3 2019 | -109,916 | Reduce 20.87% | 416,645 | $22.46 |
| Q2 2019 | -4,471 | Reduce 0.84% | 526,561 | $21.40 |
| Q1 2019 | -6,000 | Reduce 1.12% | 531,032 | $24.98 |
| Q4 2018 | -1,378 | Reduce 0.26% | 537,032 | $20.72 |
| Q3 2018 | -3,630 | Reduce 0.67% | 538,410 | $26.96 |
| Q2 2018 | -60,858 | Reduce 10.09% | 542,040 | $30.73 |
| Q1 2018 | -129,835 | Reduce 17.72% | 602,898 | $33.09 |
| Q4 2017 | -339,577 | Reduce 31.67% | 732,733 | $38.26 |
| Q3 2017 | -817,564 | Reduce 43.26% | 1.07 M | $34.84 |
| Q2 2017 | +1.89 M | New Buy | 1.89 M | $33.11 |
Mario Gabelli's Janus Henderson Group plc Investment FAQs
Mario Gabelli first purchased Janus Henderson Group plc (JHG) in Q2 2017, acquiring 1,889,874 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mario Gabelli has held Janus Henderson Group plc (JHG) for 35 quarters since Q2 2017.
Mario Gabelli's largest addition to Janus Henderson Group plc (JHG) was in Q2 2017, adding 1,889,874 shares worth $62.57 M.
According to the latest 13F filing for Q4 2025, Mario Gabelli's firm, Gamco Investors, Inc. Et Al, owns 436,032 shares of Janus Henderson Group plc (JHG), valued at approximately $20.74 M.
As of the Q4 2025 filing, Janus Henderson Group plc (JHG) represents approximately 0.20% of Mario Gabelli's publicly disclosed stock portfolio, making it one of their key holdings.
Mario Gabelli's peak holding in Janus Henderson Group plc (JHG) was 1,889,874 shares, as reported at the end of Q2 2017.