Significant Ownership of JANUS HENDERSON GROUP PLC

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Kristin Mariani - Head of North America Compliance
Location
London, United Kingdom
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by JANUS HENDERSON GROUP PLC.

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Significant Ownership of JANUS HENDERSON GROUP PLC

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
MNPR MONOPAR THERAPEUTICS INC Common Stock 20% $105,138,701 +$9,391,992 1,287,368 +9.8% JANUS HENDERSON GROUP PLC 30 Sep 2025
DRUG BRIGHT MINDS BIOSCIENCES INC. Common Stock 15% $103,357,513 +$924,052 1,155,995 +0.9% JANUS HENDERSON GROUP PLC 31 Dec 2025
CMPR CIMPRESS PLC Ordinary Shares 15% $284,891,086 +$21,424,139 3,620,423 +8.1% JANUS HENDERSON GROUP PLC 31 Dec 2025
SLNO SOLENO THERAPEUTICS, INC. Common Stock 13% $297,973,475 +$46,574,843 7,178,354 +19% JANUS HENDERSON GROUP PLC 31 Dec 2025
CCSI Consensus Cloud Solutions, Inc. Common Stock 13% $72,729,753 -$1,308,933 2,476,328 -1.8% JANUS HENDERSON GROUP PLC 30 Sep 2025
BHVN BIOHAVEN LTD. Common Shares 13% $189,711,052 +$113,253,896 16,803,459 +148% JANUS HENDERSON GROUP PLC 30 Jan 2026
PRAX PRAXIS PRECISION MEDICINES, INC Common Stock 12% $146,484,527 +$12,214,062 2,763,859 +9.1% JANUS HENDERSON GROUP PLC 30 Sep 2025
CAMP CAMP4 THERAPEUTICS CORP Common Stock 12% $37,908,892 6,307,636 JANUS HENDERSON GROUP PLC 31 Dec 2025
ENTA ENANTA PHARMACEUTICALS INC Common Stock 12% $41,823,994 3,494,068 JANUS HENDERSON GROUP PLC 31 Oct 2025
IVVD INVIVYD, INC. Common Stock 12% $27,921,385 +$1,222,450 25,383,077 +4.6% JANUS HENDERSON GROUP PLC 30 Sep 2025
TVTX TRAVERE THERAPEUTICS, INC Common Stock 12% $253,331,874 -$17,690,876 10,599,660 -6.5% JANUS HENDERSON GROUP PLC 30 Sep 2025
MIRM MIRUM PHARAMACEUTICALS, INC. Common Stock 12% $479,098,679 +$48,995,048 6,065,308 +11% JANUS HENDERSON GROUP PLC 31 Dec 2025
FBRX FORTE BIOSCIENCES, INC. Common Stock 11% $38,881,157 +$20,950,887 1,425,785 +117% JANUS HENDERSON GROUP PLC 31 Dec 2025
WEX WEX, Inc. Common Stock 11% $568,535,395 -$20,251,431 3,870,484 -3.4% JANUS HENDERSON GROUP PLC 30 Jun 2025
SGRY SURGERY PARTNERS, INC. Common Stock 10% $282,111,656 +$1,767,274 13,036,583 +0.63% JANUS HENDERSON GROUP PLC 30 Sep 2025
PCVX VAXCYTE, INC. Common Stock 10% $472,013,392 -$57,168,819 13,104,203 -11% JANUS HENDERSON GROUP PLC 30 Sep 2025
RLMD RELMADA THERAPEUTICS, INC. Common Stock 10% $35,932,374 7,439,415 JANUS HENDERSON GROUP PLC 30 Jan 2026
ICUI ICU MEDICAL, INC. Common Stock 10% $326,429,794 +$272,229 2,470,146 +0.08% JANUS HENDERSON GROUP PLC 30 Jun 2025
TARA PROTARA THERAPEUTICS, INC. Common Stock 10% $29,564,292 +$5,234,139 5,141,616 +22% JANUS HENDERSON GROUP PLC 31 Dec 2025
LXEO LEXEO THERAPEUTICS, INC. Common Stock 10% $65,914,563 +$10,720,599 7,291,434 +19% JANUS HENDERSON GROUP PLC 28 Nov 2025
BNTC BENITEC BIOPHARMA INC. Common Stock 10% $44,484,293 -$292,158,468 3,382,836 -87% JANUS HENDERSON GROUP PLC 28 Nov 2025
PALI PALISADE BIO, INC. Common Stock 10% $27,835,737 14,885,421 JANUS HENDERSON GROUP PLC 28 Nov 2025
INO INOVIO PHARMACEUTICALS, INC. Common Stock 10% $12,999,275 +$6,630,068 6,666,295 +104% JANUS HENDERSON GROUP PLC 28 Nov 2025
OVID OVID THERAPEUTICS INC. Common Stock 10% $9,461,772 7,114,114 JANUS HENDERSON GROUP PLC 28 Nov 2025
EQ EQUILLIUM, INC. Common Stock 10% $9,429,020 6,083,239 0% JANUS HENDERSON GROUP PLC 30 Jan 2026
IMUX IMMUNIC, INC. Common Stock 10% $8,531,675 +$6,622,427 12,016,444 +347% JANUS HENDERSON GROUP PLC 28 Nov 2025
KTTA PASITHEA THERAPEUTICS CORP. Common Stock 10% $7,160,756 10,229,652 JANUS HENDERSON GROUP PLC 28 Nov 2025
TENX TENAX THERAPEUTICS, INC. Common Stock 10% $4,172,774 +$3,057,778 623,733 +274% JANUS HENDERSON GROUP PLC 28 Nov 2025
PTNT PALATIN TECHNOLOGIES INC Common Stock 10% $1,296,139 170,097 JANUS HENDERSON GROUP PLC 28 Nov 2025
TFX TELEFLEX INCORPORATED Common Stock 9.4% $496,584,753 -$21,152,842 4,149,271 -4.1% JANUS HENDERSON GROUP PLC 30 Jun 2025
JANX JANUX THERAPEUTICS, INC. Common Stock 8.9% $73,836,251 -$9,432,245 5,350,453 -11% JANUS HENDERSON GROUP PLC 31 Dec 2025
DBVT DBV TECHNOLOGIES S.A. Common Stock 8.8% 20,469,392 +288% JANUS HENDERSON GROUP PLC 31 Dec 2025
LNTH LANTHEUS HOLDINGS, INC. Common Stock 8.6% $385,581,607 -$66,039,224 5,707,247 -15% JANUS HENDERSON GROUP PLC 31 Dec 2025
DYN DYNE THERAPEUTICS INC Common Stock 8.5% $251,645,523 -$15,543,028 13,887,722 -5.8% JANUS HENDERSON GROUP PLC 31 Dec 2025
OLMA OLEMA PHARMACEUTICALS, INC. Common Stock 8.4% $193,186,485 +$89,949,893 6,710,194 +87% JANUS HENDERSON GROUP PLC 31 Dec 2025
ZD ZIFF DAVIS, INC. Common Stock 8.4% $131,029,443 -$4,946,066 3,439,093 -3.6% JANUS HENDERSON GROUP PLC 30 Sep 2025
ASMB ASSEMBLY BIOSCIENCES, INC. Common Stock 8.2% $44,444,160 1,341,508 JANUS HENDERSON GROUP PLC 28 Nov 2025
FDMT 4D MOLECULAR THERAPEUTICS, INC. Common Stock 8.1% $36,437,978 +$18,735,371 4,635,875 +106% JANUS HENDERSON GROUP PLC 31 Dec 2025
CTNM CONTINEUM THERAPEUTICS, INC. Class A Common Stock 7.9% $27,991,830 2,448,979 JANUS HENDERSON GROUP PLC 31 Dec 2025
ASND ASCENDIS PHARMA A/S American Depositary Shares 7.8% $859,467,360 -$20,821,968 4,323,059 -2.4% JANUS HENDERSON GROUP PLC 30 Sep 2025
GPCR STRUCTURE THERAPEUTICS INC American Depositary Shares 7.7% $124,567,128 -$3,477,040 4,448,826 -2.7% JANUS HENDERSON GROUP PLC 30 Sep 2025
IMMX IMMIX BIOPHARMA, INC. Common Stock 7.4% $19,098,036 3,921,568 JANUS HENDERSON GROUP PLC 31 Dec 2025
IDYA IDEAYA BIOSCIENCES, INC. Common Stock 7.3% $174,915,104 +$6,043,368 6,428,339 +3.6% JANUS HENDERSON GROUP PLC 30 Sep 2025
MAZE MAZE THERAPEUTICS, INC. Common Stock 7.3% $83,143,819 +$15,075,261 3,206,472 +22% JANUS HENDERSON GROUP PLC 30 Sep 2025
MDGL MADRIGAL PHARMACEUTICALS, INC. Common Stock 7% $814,704,393 -$132,548,829 1,584,843 -14% JANUS HENDERSON GROUP PLC 31 Dec 2025
ARMK ARAMARK Common Stock 6.9% $783,751,824 +$62,546,703 17,963,599 +8.7% JANUS HENDERSON GROUP PLC 30 Jun 2025
ST SENSATA TECHNOLOGIES HOLDING PLC Ordinary Shares 6.9% $307,320,322 +$2,666,251 10,059,585 +0.88% JANUS HENDERSON GROUP PLC 30 Sep 2025
RVTY REVVITY, INC. American Depositary Shares 6.6% $668,529,251 +$35,545,406 7,627,259 +5.6% JANUS HENDERSON GROUP PLC 30 Sep 2025
JBIO JADE BIOSCIENCES, INC. Common Stock 6.2% $42,459,514 3,063,457 JANUS HENDERSON GROUP PLC 31 Dec 2025
RVMD REVOLUTION MEDICINES, INC. Common Stock 6.1% $530,327,722 +$35,740,771 11,356,054 +7.2% JANUS HENDERSON GROUP PLC 30 Sep 2025
GMED GLOBUS MEDICAL, INC. Class A Common Stock 6.1% $522,135,958 +$30,787,723 7,029,294 +6.3% JANUS HENDERSON GROUP PLC 31 Mar 2025
ASUR ASURE SOFTWARE INC Class A Common Stock 6.1% $13,752,294 -$316,528 1,677,109 -2.2% JANUS HENDERSON GROUP PLC 30 Sep 2025
FLEX FLEX LTD. Ordinary Shares 6% $1,387,675,992 -$247,217,838 22,331,445 -15% JANUS HENDERSON GROUP PLC 31 Dec 2025
DAY DAYFORCE, INC. Common Stock 6% $647,420,298 +$69,826,973 9,397,885 +12% JANUS HENDERSON GROUP PLC 30 Sep 2025
PTCT PTC THERAPEUTICS, INC. Common Stock 6% $376,123,770 4,851,332 JANUS HENDERSON GROUP PLC 31 Dec 2025
OCGN OCUGEN, INC. Common Stock 6% $26,800,000 20,000,000 JANUS HENDERSON GROUP PLC 28 Nov 2025
OSIS OSI SYSTEMS, INC. Common Stock 5.9% $249,312,529 -$13,068,899 1,000,291 -5% JANUS HENDERSON GROUP PLC 30 Sep 2025
BELFB BEL FUSE INC. Class B Common Stock 5.9% $116,435,356 619,337 JANUS HENDERSON GROUP PLC 31 Dec 2025
SSNC SS&C TECHNOLOGIES HOLDINGS, INC. Common Stock 5.7% $1,246,559,289 -$224,048,552 14,017,309 -15% JANUS HENDERSON GROUP PLC 31 Dec 2025
BBIO BRIDGEBIO PHARMA, INC. Common Stock 5.7% $845,275,116 11,000,457 JANUS HENDERSON GROUP PLC 31 Dec 2025
GIL GILDAN ACTIVEWEAR INC Common Stock 5.7% $666,541,832 -$114,890 10,495,069 -0.02% JANUS HENDERSON GROUP PLC 31 Dec 2025
ARDX ARDELYX, INC. Common Stock 5.7% $76,170,752 -$6,798,497 13,824,093 -8.2% JANUS HENDERSON GROUP PLC 30 Sep 2025
RTO RENTOKIL INITIAL PLC Common Stock 5.6% -$2,244,147 142,436,808 -0.31% JANUS HENDERSON GROUP PLC 30 Sep 2025
TYRA TYRA BIOSCIENCES, INC Common Stock 5.4% $29,305,535 +$1,672,924 2,856,290 +6.1% JANUS HENDERSON GROUP PLC 30 Jun 2025
APG API GROUP CORP Common Stock 5.3% $763,991,448 22,228,439 JANUS HENDERSON GROUP PLC 30 Sep 2025
GKOS GLAUKOS CORP Common Stock 5.3% $340,851,240 3,018,787 JANUS HENDERSON GROUP PLC 31 Dec 2025
LGND LIGAND PHARMACEUTICALS INCORPORATED Common Stock 5.3% $184,646,839 -$3,251,582 1,042,378 -1.7% JANUS HENDERSON GROUP PLC 30 Sep 2025
DKNG DRAFTKINGS INC. Class A Common Stock 5.1% $884,721,120 25,313,909 JANUS HENDERSON GROUP PLC 31 Dec 2025
XENE XENON PHARMACEUTICALS INC. Common Stock 5.1% $158,346,983 3,943,885 JANUS HENDERSON GROUP PLC 30 Sep 2025
BMEA BIOMEA FUSION, INC. Common Stock 5% $4,725,000 3,750,000 JANUS HENDERSON GROUP PLC 28 Nov 2025
SXT SENSIENT TECHNOLOGIES CORPORATION Common Stock 4.9% $195,821,018 -$18,962,586 2,084,311 -8.8% JANUS HENDERSON GROUP PLC 31 Dec 2025
INSE INSPIRED ENTERTAINMENT, INC Common Stock 4.9% $12,424,345 -$284,889 1,324,557 -2.2% JANUS HENDERSON GROUP PLC 30 Sep 2025
FWONK LIBERTY MEDIA CORPORATION Series C Liberty Formula One Common Stock 4.8% $1,121,643,010 -$292,351,894 10,738,564 -21% JANUS HENDERSON GROUP PLC 30 Sep 2025
NEO NEOGENOMICS INC Common Stock 4.8% $63,315,197 6,165,063 JANUS HENDERSON GROUP PLC 31 Dec 2024
EWTX EDGEWISE THERAPEUTICS, INC. Common Stock 4.7% $80,764,749 -$8,499,572 4,979,331 -9.5% JANUS HENDERSON GROUP PLC 30 Sep 2025
RNA AVIDITY BIOSCIENCES, INC. Common Stock 4.6% $500,546,351 -$92,717,850 6,939,503 -16% JANUS HENDERSON GROUP PLC 31 Dec 2025
WD WALKER & DUNLOP, INC. Common Stock 4.6% $109,887,835 -$21,308,077 1,559,135 -16% JANUS HENDERSON GROUP PLC 30 Jun 2025
SKIN The Beauty Health Company Common Stock 4.5% $10,922,459 -$4,854,238 5,718,565 -31% JANUS HENDERSON GROUP PLC 30 Jun 2025
BLKB BLACKBAUD, INC. Common Stock 4.3% $135,336,329 -$48,644,075 2,122,257 -26% JANUS HENDERSON GROUP PLC 31 Mar 2025
AKRO AKERO THERAPEUTICS, INC. Common Stock 4.1% $138,062,973 -$117,126,544 3,397,779 -46% JANUS HENDERSON GROUP PLC 31 Dec 2025
TRDA ENTRADA THERAPEUTICS, INC. Common Stock 4% $9,964,391 -$3,932,443 1,521,281 -28% JANUS HENDERSON GROUP PLC 30 Jun 2025
ETNB 89bio, Inc. Common Stock 3.6% $79,060,933 -$226,534,240 5,378,185 -74% JANUS HENDERSON GROUP PLC 30 Sep 2025
ZLAB ZAI LAB LTD Common Stock 3.6% 39,501,040 -41% JANUS HENDERSON GROUP PLC 31 Mar 2025
CZR CAESARS ENTERTAINMENT INC Common Stock 3.3% $198,781,761 7,101,885 JANUS HENDERSON GROUP PLC 31 Dec 2024
MTSR METSERA, INC. Common Stock 3.1% $228,620,854 -$148,748,091 3,242,849 -39% JANUS HENDERSON GROUP PLC 31 Dec 2025
DOX AMDOCS LIMITED Ordinary Shares 2.3% $204,096,503 -$271,399,164 2,487,465 -57% JANUS HENDERSON GROUP PLC 30 Sep 2025
IMNM IMMUNOME INC Common Stock 2.2% $16,313,738 -$13,130,862 1,914,758 -45% JANUS HENDERSON GROUP PLC 31 Mar 2025
AVDL AVADEL PHARMACEUTICALS PLC Ordinary Shares 1.9% $39,176,620 -$120,413,722 1,823,865 -75% JANUS HENDERSON GROUP PLC 31 Dec 2025
PEPG PEPGEN INC Common Stock 1.6% $835,610 522,256 JANUS HENDERSON GROUP PLC 31 Dec 2024
VRNA VERONA PHARMA PLC American Depositary Shares 1.2% $107,837,284 -$546,765,073 1,010,564 -84% JANUS HENDERSON GROUP PLC 30 Sep 2025
OABI OMNIAB, INC. Common Stock 0.8% $2,086,555 -$15,655,944 948,434 -88% JANUS HENDERSON GROUP PLC 30 Jun 2025
CATX PERSPECTIVE THERAPEUTICS INC Common Stock 0% $43,349 17,839 JANUS HENDERSON GROUP PLC 31 Dec 2024
CRGX CARGO THERAPEUTICS, INC. Common Stock 0% $36,577 -$13,068,842 7,900 -100% JANUS HENDERSON GROUP PLC 31 Mar 2025
APLT APPLIED THERAPEUTICS INC Common Stock 0% $13,958 -$4,706,957 35,791 -100% JANUS HENDERSON GROUP PLC 31 Dec 2024
CTMX CytomX Therapeutics, Inc. Common Stock 0% $0 0 JANUS HENDERSON GROUP PLC 31 Dec 2024
VTGN VISTAGEN THERAPEUTICS, INC. Common Stock 0% $0 -$3,082,668 0 -100% JANUS HENDERSON GROUP PLC 31 Dec 2025
LRMR LARIMAR THERAPEUTICS, INC. Common Stock 0% $0 -$22,422,635 0 -100% JANUS HENDERSON GROUP PLC 31 Mar 2025
MREO MEREO BIOPHARMA GROUP PLC Ordinary Shares 0% $0 -$10,751,486 0 -100% JANUS HENDERSON GROUP PLC 31 Dec 2025
NGNE NEUROGENE INC. Common Stock 0% $0 0 JANUS HENDERSON GROUP PLC 31 Dec 2024
DTIL Precision BioSciences, Inc. Common Stock 0% $0 0 JANUS HENDERSON GROUP PLC 31 Dec 2024

Schedules 13D/G Reported by JANUS HENDERSON GROUP PLC:

Sym Target Class Ownership Change Current Shares Change Value Reporting name Form Report Period Filing Date
* An asterisk sign (*) next to the price indicates that the price is likely invalid.