13D/G large-stake feed

Latest 13D/G Reports

Since 07 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

BARCLAYS PLC stake in MASIMO CORP

Holder CIK 0000312069

13G MASI
CIK
0000312069
Issuer
MASIMO CORP
Security
MASI
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.5% / 2,892,262 shares
Filed
14 May 2026, 21:28:53 UTC

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

13G/A

BARCLAYS PLC stake in STAR HOLDINGS

Holder CIK 0000312069

13G/A STHO
CIK
0000312069
Issuer
Star Holdings
Security
STHO
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
5.7% / 688,488 shares
Filed
14 May 2026, 21:27:10 UTC

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

13G

BARCLAYS PLC stake in MERCER INTERNATIONAL INC

Holder CIK 0000312069

13G MERC
CIK
0000312069
Issuer
MERCER INTERNATIONAL INC.
Security
MERC
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.8% / 3,853,740 shares
Filed
14 May 2026, 21:26:36 UTC

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

13G

BARCLAYS PLC stake in REVIVA PHARMACEUTICALS HOLDI

Holder CIK 0000312069

13G RVPH
CIK
0000312069
Issuer
REVIVA PHARMACEUTICALS HOLDINGS, INC.
Security
RVPH
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
6% / 763,579 shares
Filed
14 May 2026, 21:25:59 UTC

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

13G

BARCLAYS PLC stake in GORES HOLDINGS X INC-CL A

Holder CIK 0000312069

13G GTENW
CIK
0000312069
Issuer
Gores Holdings X, Inc. / CI
Security
GTENW
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
6.4% / 2,308,063 shares
Filed
14 May 2026, 21:25:06 UTC

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

13G/A

BARCLAYS PLC stake in ANDRETTI ACQUISITION CORP -A

Holder CIK 0000312069

13G/A POLEW
CIK
0000312069
Issuer
Andretti Acquisition Corp. II
Security
POLEW
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
7% / 1,663,200 shares
Filed
14 May 2026, 21:24:35 UTC

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

Rows shown
2,251-2,300 of 3,765
Per page
50
Current page
46

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

7%

Highest class ownership surfaced in the preview cards.

Newest evidence

14 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

BARCLAYS PLC

MASIMO CORP (MASI)

Schedule 13G Ownership 5.5% Filing-backed
CIK
000031206926000178
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.5%
Filed
14 May 2026, 21:28:53 UTC
Period
31 Mar 2026

BARCLAYS PLC filed Schedule 13G for MASIMO CORP (MASI). Reported class ownership: 5.5%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

BARCLAYS PLC

STAR HOLDINGS (STHO)

Schedule 13G/A Ownership 5.7% Filing-backed
CIK
000031206926000176
Source
SEC Schedule 13G/A
Action
Large stake reduction disclosed
Magnitude
5.7%
Filed
14 May 2026, 21:27:10 UTC
Period
31 Mar 2026

BARCLAYS PLC filed Schedule 13G/A for STAR HOLDINGS (STHO). Reported class ownership: 5.7%. Ownership change: -1.1%. Share change: -20%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

BARCLAYS PLC

MERCER INTERNATIONAL INC (MERC)

Schedule 13G Ownership 5.8% Filing-backed
CIK
000031206926000175
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.8%
Filed
14 May 2026, 21:26:36 UTC
Period
31 Mar 2026

BARCLAYS PLC filed Schedule 13G for MERCER INTERNATIONAL INC (MERC). Reported class ownership: 5.8%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

BARCLAYS PLC

REVIVA PHARMACEUTICALS HOLDI (RVPH)

Schedule 13G Ownership 6% Filing-backed
CIK
000031206926000174
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
6%
Filed
14 May 2026, 21:25:59 UTC
Period
31 Mar 2026

BARCLAYS PLC filed Schedule 13G for REVIVA PHARMACEUTICALS HOLDI (RVPH). Reported class ownership: 6%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

BARCLAYS PLC

GORES HOLDINGS X INC-CL A (GTENW)

Schedule 13G Ownership 6.4% Filing-backed
CIK
000031206926000172
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
6.4%
Filed
14 May 2026, 21:25:06 UTC
Period
31 Mar 2026

BARCLAYS PLC filed Schedule 13G for GORES HOLDINGS X INC-CL A (GTENW). Reported class ownership: 6.4%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

BARCLAYS PLC

ANDRETTI ACQUISITION CORP -A (POLEW)

Schedule 13G/A Ownership 7% Filing-backed
CIK
000031206926000171
Source
SEC Schedule 13G/A
Action
Large beneficial ownership stake disclosed
Magnitude
7%
Filed
14 May 2026, 21:24:35 UTC
Period
31 Mar 2026

BARCLAYS PLC filed Schedule 13G/A for ANDRETTI ACQUISITION CORP -A (POLEW). Reported class ownership: 7%. 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
BARCLAYS PLC CIK 0000312069 MASI MASIMO CORP 2,892,262 5.5% SEC filing
BARCLAYS PLC CIK 0000312069 STHO STAR HOLDINGS 688,488 5.7% SEC filing
BARCLAYS PLC CIK 0000312069 MERC MERCER INTERNATIONAL INC 3,853,740 5.8% SEC filing
BARCLAYS PLC CIK 0000312069 RVPH REVIVA PHARMACEUTICALS HOLDI 763,579 6% SEC filing
BARCLAYS PLC CIK 0000312069 GTENW GORES HOLDINGS X INC-CL A 2,308,063 6.4% SEC filing
BARCLAYS PLC CIK 0000312069 POLEW ANDRETTI ACQUISITION CORP -A 1,663,200 7% SEC filing
Boston Partners CIK 0001386060 VVV VALVOLINE INC 6,348,834 5% SEC filing
BARCLAYS PLC CIK 0000312069 GRAF GRAF GLOBAL CORP-CL A 1,610,000 7% SEC filing
BARCLAYS PLC CIK 0000312069 SBXD SILVERBOX CORP IV-A 1,431,850 7% SEC filing
BARCLAYS PLC CIK 0000312069 ALIS CALISA ACQUISITION CORP 629,321 7.5% SEC filing
PEAK6 Capital Management LLC CIK 0001389956 ARBE Arbe Robotics Ltd. 7,533,946 6.1% SEC filing
Mosca Alison CIK 0001835537 CLNN Clene Inc. 1,831,990 13% SEC filing
Boston Partners CIK 0001386060 RRC RANGE RESOURCES CORP 11,728,349 5% SEC filing
Redmile Group, LLC CIK 0001425738 ATRA Atara Biotherapeutics, Inc. 950,994 9.9% SEC filing
BARCLAYS PLC CIK 0000312069 ALFUW CENTURION ACQUISITION CORP 0 0% SEC filing
BARCLAYS PLC CIK 0000312069 WENNW WEN ACQUISITION CORP-A 19,901 0.06% SEC filing
Boston Partners CIK 0001386060 EGHT 8X8 INC /DE/ 6,674,315 4.8% SEC filing
BARCLAYS PLC CIK 0000312069 PAHC PHIBRO ANIMAL HEALTH CORP-A 263,695 1.3% SEC filing
BARCLAYS PLC CIK 0000312069 JRVR JAMES RIVER GROUP HOLDINGS I 740,342 1.6% SEC filing
BARCLAYS PLC CIK 0000312069 MACIW MELAR ACQUISITION CORP I-A 576,328 3.6% SEC filing
BARCLAYS PLC CIK 0000312069 SHEN SHENANDOAH TELECOMMUNICATION 2,048,706 3.7% SEC filing
BARCLAYS PLC CIK 0000312069 RDCM RADCOM LTD 739,277 4.6% SEC filing
BARCLAYS PLC CIK 0000312069 LCCC LAKESHORE ACQUISITION III CO 450,000 5% SEC filing
BARCLAYS PLC CIK 0000312069 NOEM CO2 ENERGY TRANSITION CORP 501,776 5.2% SEC filing
L1 Capital Pty Ltd CIK 0001817646 NXE NexGen Energy Ltd 38,278,197 5.8% SEC filing
Flynn James E CIK 0001352546 INSP Inspire Medical Systems, Inc. 1,296,862 4.5% SEC filing
Boston Partners CIK 0001386060 TBI TrueBlue, Inc. 3,254,527 11% SEC filing
Wolf Hill Capital Management, LP CIK 0001785988 NN NextNav Inc. 8,113,691 6% SEC filing
Wolf Hill Capital Management, LP CIK 0001785988 MBI MBIA Inc. 2,545,543 5% SEC filing
Wolf Hill Capital Management, LP CIK 0001785988 LBTYA Liberty Global Ltd. 11,658,976 6.7% SEC filing
North Run Strategic Opportunities Fund I, LP CIK 0002052913 LPTH LIGHTPATH TECHNOLOGIES INC 10,319,347 15% SEC filing
HBM IV, Inc. CIK 0002066775 DGNX Diginex Limited 17,799,044 7.6% SEC filing
Strategic EP, LLC CIK 0002081874 PDC Perpetuals.com Ltd 2,291,783 9.9% SEC filing
Avoro Capital Advisors LLC CIK 0001633313 WHWK Whitehawk Therapeutics, Inc. 18,292,675 20% SEC filing
Boston Partners CIK 0001386060 ALLE Allegion plc 4,260,020 5% SEC filing
L1 Capital Pty Ltd CIK 0001817646 EGO Eldorado Gold Corp 10,440,333 5.3% SEC filing
Hu Xianqun CIK 0001965752 MATH Metalpha Technology Holding Ltd 0 0% SEC filing
Wang Bingzhong CIK 0001979907 MATH Metalpha Technology Holding Ltd 6,580,342 14% SEC filing
BCLS II Investco, LP CIK 0001818893 NAMS NewAmsterdam Pharma Company N.V. 2,059,896 1.8% SEC filing
Centaurus Investments Ltd CIK 0001993498 PHGE BiomX Inc. 82,618 5.2% SEC filing
TRIAN FUND MANAGEMENT, L.P. CIK 0001345471 JHG JANUS HENDERSON GROUP PLC 25,654,382 17% SEC filing
Apeiron Investment Group Ltd. CIK 0001845711 APAD Enhanced Group Inc. 29,904,746 24% SEC filing
CONTINENTAL GENERAL INSURANCE CO CIK 0000024046 GEO GEO GROUP INC 6,775,296 5.1% SEC filing
Ramaswamy Vivek CIK 0001635075 BZFD BuzzFeed, Inc. 0 0% SEC filing
NEEDHAM INVESTMENT MANAGEMENT LLC CIK 0001167212 TDUP ThredUp Inc. 9,275,000 8.7% SEC filing
Seros Alexandra CIK 0001965002 EVC Entravision Communications Corporation 10,068,185 12% SEC filing
NEEDHAM INVESTMENT MANAGEMENT LLC CIK 0001167212 PDFS PDF Solutions, Inc. 2,022,700 5.1% SEC filing
Boston Partners CIK 0001386060 NOMD Nomad Foods Ltd 5,009,106 3.5% SEC filing
GOLDMAN SACHS GROUP INC CIK 0000886982 SSACU SPACSPHERE ACQUISITION CORP 1,321,158 7.3% SEC filing
NEEDHAM INVESTMENT MANAGEMENT LLC CIK 0001167212 POCI Precision Optics Corporation, Inc. 1,670,550 15% SEC filing
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