13D/G large-stake feed

Latest 13D/G Reports

Since 06 May 2026. Review filer CIK, subject security, ownership %, and SEC evidence first.

Recent 13D/G signals

Large-stake disclosures to inspect

Start with holder, issuer/security, stake size, and SEC evidence.

13G

JANUS HENDERSON GROUP PLC stake in MINERVA NEUROSCIENCES, INC.

Holder CIK 0001274173

13G NERV
CIK
0001274173
Issuer
Minerva Neurosciences, Inc.
Security
NERV
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
9.9% / 4,307,759 shares
Filed
15 May 2026, 11:43:36 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G

JANUS HENDERSON GROUP PLC stake in LONGEVERON INC.

Holder CIK 0001274173

13G LGVN
CIK
0001274173
Issuer
Longeveron Inc.
Security
LGVN
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.9% / 1,291,331 shares
Filed
15 May 2026, 11:43:27 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G

JANUS HENDERSON GROUP PLC stake in BICARA THERAPEUTICS INC.

Holder CIK 0001274173

13G BCAX
CIK
0001274173
Issuer
Bicara Therapeutics Inc.
Security
BCAX
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.1% / 3,339,218 shares
Filed
15 May 2026, 11:43:19 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G

JANUS HENDERSON GROUP PLC stake in TARSUS PHARMACEUTICALS, INC.

Holder CIK 0001274173

13G TARS
CIK
0001274173
Issuer
Tarsus Pharmaceuticals, Inc.
Security
TARS
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.3% / 2,240,963 shares
Filed
15 May 2026, 11:43:01 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G/A

Polar Asset Management Partners Inc. stake in D Boral ARC Acquisition I Corp

Holder CIK 0001326389

13G/A BCAR
CIK
0001326389
Issuer
D. Boral ARC Acquisition I Corp.
Security
BCAR
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
1.7% / 488,064 shares
Filed
15 May 2026, 11:43:00 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G

JANUS HENDERSON GROUP PLC stake in STRIDE, INC.

Holder CIK 0001274173

13G LRN
CIK
0001274173
Issuer
Stride, Inc.
Security
LRN
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.4% / 2,277,279 shares
Filed
15 May 2026, 11:42:52 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

Rows shown
1,551-1,600 of 3,993
Per page
50
Current page
32

Schedule 13D/G ownership events

Activist and large-stake radar

Stake size, change direction, reporting filer, issuer, active/passive form type, and SEC evidence.

Visible reports

6

Fresh large-stake filings promoted above the legacy table.

13D/13G mix

0/6

Active-intent candidates versus passive large-stake disclosures.

Largest visible stake

9.9%

Highest class ownership surfaced in the preview cards.

Newest evidence

15 May 2026

Use recency before treating an old large-stake story as fresh.

Signal checks

13D active-intent check

active/control intent, item text, amendments

13G passive stake check

large passive holder disclosure

Stake change direction

ownership percent and share change

Issuer and owner follow-up

issuer, filer history, insider activity, 13F context

SEC-verifiable Schedule 13D/G path

Open the Schedule 13D/G filing, then cross-check insider and Form 13F evidence.

Large-stake signal

JANUS HENDERSON GROUP PLC

MINERVA NEUROSCIENCES, INC. (NERV)

Schedule 13G Ownership 9.9% Filing-backed
CIK
000127417326000130
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
9.9%
Filed
15 May 2026, 11:43:36 UTC
Period
31 Mar 2026

JANUS HENDERSON GROUP PLC filed Schedule 13G for MINERVA NEUROSCIENCES, INC. (NERV). Reported class ownership: 9.9%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

JANUS HENDERSON GROUP PLC

LONGEVERON INC. (LGVN)

Schedule 13G Ownership 5.9% Filing-backed
CIK
000127417326000129
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.9%
Filed
15 May 2026, 11:43:27 UTC
Period
31 Mar 2026

JANUS HENDERSON GROUP PLC filed Schedule 13G for LONGEVERON INC. (LGVN). Reported class ownership: 5.9%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

JANUS HENDERSON GROUP PLC

BICARA THERAPEUTICS INC. (BCAX)

Schedule 13G Ownership 5.1% Filing-backed
CIK
000127417326000128
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.1%
Filed
15 May 2026, 11:43:19 UTC
Period
31 Mar 2026

JANUS HENDERSON GROUP PLC filed Schedule 13G for BICARA THERAPEUTICS INC. (BCAX). Reported class ownership: 5.1%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

JANUS HENDERSON GROUP PLC

TARSUS PHARMACEUTICALS, INC. (TARS)

Schedule 13G Ownership 5.3% Filing-backed
CIK
000127417326000126
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.3%
Filed
15 May 2026, 11:43:01 UTC
Period
31 Mar 2026

JANUS HENDERSON GROUP PLC filed Schedule 13G for TARSUS PHARMACEUTICALS, INC. (TARS). Reported class ownership: 5.3%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

Polar Asset Management Partners Inc.

D Boral ARC Acquisition I Corp (BCAR)

Schedule 13G/A Ownership 1.7% Filing-backed
CIK
000204825126003769
Source
SEC Schedule 13G/A
Action
Large stake reduction disclosed
Magnitude
1.7%
Filed
15 May 2026, 11:43:00 UTC
Period
31 Mar 2026

Polar Asset Management Partners Inc. filed Schedule 13G/A for D Boral ARC Acquisition I Corp (BCAR). Reported class ownership: 1.7%. Ownership change: -5.6%. Share change: -78%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

JANUS HENDERSON GROUP PLC

STRIDE, INC. (LRN)

Schedule 13G Ownership 5.4% Filing-backed
CIK
000127417326000125
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.4%
Filed
15 May 2026, 11:42:52 UTC
Period
31 Mar 2026

JANUS HENDERSON GROUP PLC filed Schedule 13G for STRIDE, INC. (LRN). Reported class ownership: 5.4%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Filed by Symbol Subject Shares owned Ownership % Source
JANUS HENDERSON GROUP PLC CIK 0001274173 NERV MINERVA NEUROSCIENCES, INC. 4,307,759 9.9% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 LGVN LONGEVERON INC. 1,291,331 5.9% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 BCAX BICARA THERAPEUTICS INC. 3,339,218 5.1% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 TARS TARSUS PHARMACEUTICALS, INC. 2,240,963 5.3% SEC filing
Polar Asset Management Partners Inc. CIK 0001326389 BCAR D Boral ARC Acquisition I Corp 488,064 1.7% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 LRN STRIDE, INC. 2,277,279 5.4% SEC filing
ROSENBLATT DAVID S CIK 0001237860 DIBS 1stdibs.com, Inc. 3,623,864 9.8% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 EWTX EDGEWISE THERAPEUTICS, INC. 5,915,556 5.5% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 COLL COLLEGIUM PHARMACEUTICAL, INC. 1,825,651 5.8% SEC filing
Polar Asset Management Partners Inc. CIK 0001326389 DBCA D Boral Acquisition I Corp 1,750,000 5.7% SEC filing
Polar Asset Management Partners Inc. CIK 0001326389 CAPN Cayson Acquisition Corp 275,000 5.2% SEC filing
AQR CAPITAL MANAGEMENT LLC CIK 0001167557 GT GOODYEAR TIRE & RUBBER CO /OH/ 17,985,350 6.3% SEC filing
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 NRDS NerdWallet Inc 1,808,988 5.2% SEC filing
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 FSM Fortuna Mining Corp 15,116,413 5% SEC filing
Caledonia (Private) Investments Pty Ltd CIK 0001352924 ZG Zillow Group, Inc. 11,370,543 27% SEC filing
Divisadero Street Capital Management, LP CIK 0001901865 SGHC Super Group (SGHC) Limited 30,863,071 6.1% SEC filing
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 DBX Dropbox Inc 8,533,736 5.4% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 REVB REVELATION BIOSCIENCES, INC. 323,241 7.8% SEC filing
Polar Asset Management Partners Inc. CIK 0001326389 ARTCU Art Technology Acquisition Corp 1,500,000 5.7% SEC filing
EVENTIDE ASSET MANAGEMENT, LLC CIK 0001442891 COLL COLLEGIUM PHARMACEUTICAL, INC 1,424,282 4.5% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 RIGL RIGEL PHARMACEUTICALS, INC. 1,280,000 6.9% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 REKR REKOR SYSTEMS, INC. 2,850,000 2% SEC filing
RIVERNORTH CAPITAL MANAGEMENT, LLC CIK 0001447578 MQY BLACKROCK MUNIYIELD QUALITY FUND, INC. 7,899,355 5.2% SEC filing
Polar Asset Management Partners Inc. CIK 0001326389 CUSIP G0R21F105 APEX Tech Acquisition Inc 850,000 6% SEC filing
SymBiosis Capital Partners, LLC CIK 0002006045 CUSIP 0753018100 Rani Therapeutics Holdings, Inc. 4,433,620 4.4% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 OLB THE OLB GROUP, INC. 1,387,983 10% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 GROM ORTHOFIX MEDICAL INC. 2,700,000 6.7% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 NUWE Nuwellis, Inc. 1,055,496 7.1% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 DYNT MACROGENICS, INC. 6,012,000 9.5% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 RKDA Arcadia Biosciences, Inc. 159,390 7.8% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 LMFA LM FUNDING AMERICA, INC. 1,661,395 10% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 LICY Li-Cycle Holdings Corp. 4,569,327 10% SEC filing
CHOW TAI FOOK CAPITAL Ltd CIK 0001962001 IE Ivanhoe Electric Inc. 6,405,664 4% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 SGMO SANGAMO THERAPEUTICS, INC. 40,400,067 9.8% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 FGEN KYNTRA BIO, INC. 400,000 9.9% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 KURA KURA ONCOLOGY, INC. 3,736,000 4.2% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 IVF INVO FERTILITY, INC. 371,562 10% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 SNAX STRYVE FOODS, INC. 397,085 10% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 CYTH IRONWOOD PHARMACEUTICALS, INC. 15,028,000 9.2% SEC filing
Radoff Bradley Louis CIK 0001380585 RHEP REGIONAL HEALTH PROPERTIES, INC 392,646 9.8% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 INBS INTELLIGENT BIO SOLUTIONS INC. 163,571 10% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 ARDX ARDELYX, INC. 8,371,234 3.4% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 OSIS OSI SYSTEMS, INC. 772,314 4.7% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 RVMD REVOLUTION MEDICINES, INC. 9,766,496 4.9% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 XENE XENON PHARMACEUTICALS INC. 4,175,982 4.5% SEC filing
JANUS HENDERSON GROUP PLC CIK 0001274173 SSNC SS&C TECHNOLOGIES HOLDINGS, INC. 8,425,246 3.5% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 SOBR SOBR SAFE, INC. 147,403 5% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 IMNN Imunon, Inc. 396,718 10% SEC filing
ARMISTICE CAPITAL, LLC CIK 0001601086 IINN INSPIRA TECHNOLOGIES OXY B.H.N. LTD. 4,343,252 10% SEC filing
BlueCrest Capital Management Ltd CIK 0001610880 CRTO Criteo S.A. 2,260,000 4.5% SEC filing
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