13D/G large-stake feed

Latest 13D/G Reports

Since 02 Aug 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

Doma Perpetual Capital Management LLC stake in Afya Ltd

Holder CIK 0001962221

13G AFYA
CIK
0001962221
Issuer
Afya Ltd
Security
AFYA
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.1% / 2,719,969 shares
Filed
13 Aug 2026, 06:32:49 UTC

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

13G/A

Shu Lee-Lean stake in GSI Technology, Inc.

Holder CIK 0001394413

13G/A GSIT
CIK
0001394413
Issuer
GSI TECHNOLOGY INC
Security
GSIT
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
9% / 3,543,989 shares
Filed
13 Aug 2026, 06:31:14 UTC

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

13G/A

Magnetar Financial LLC stake in CHURCHILL CAPITAL CORP XI

Holder CIK 0001352851

13G/A CCXI
CIK
0001352851
Issuer
Churchill Capital Corp XI
Security
CCXI
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
4.6% / 1,918,525 shares
Filed
13 Aug 2026, 06:28:57 UTC

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

13G/A

Magnetar Financial LLC stake in ILLUMINATION ACQUISITION CORP. I

Holder CIK 0001352851

13G/A ILLU
CIK
0001352851
Issuer
Illumination Acquisition Corp. I
Security
ILLU
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
7.8% / 1,849,995 shares
Filed
13 Aug 2026, 06:28:46 UTC

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

13G/A

Magnetar Financial LLC stake in GRAF GLOBAL CORP.

Holder CIK 0001352851

13G/A GRAF
CIK
0001352851
Issuer
Graf Global Corp.
Security
GRAF
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
6% / 849,999 shares
Filed
13 Aug 2026, 06:28:31 UTC

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

13G

Magnetar Financial LLC stake in YORKVILLE INTERNATIONAL CAPITAL CORP

Holder CIK 0001352851

13G YICC
CIK
0001352851
Issuer
Yorkville International Capital Corp.
Security
YICC
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
5.2% / 1,200,000 shares
Filed
13 Aug 2026, 06:27:59 UTC

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

Rows shown
2,701-2,750 of 4,457
Per page
50
Current page
55

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%

Highest class ownership surfaced in the preview cards.

Newest evidence

13 Aug 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

Doma Perpetual Capital Management LLC

Afya Ltd (AFYA)

Schedule 13G Ownership 5.1% Filing-backed
CIK
000117266126003349
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.1%
Filed
13 Aug 2026, 06:32:49 UTC
Period
10 Aug 2026

Doma Perpetual Capital Management LLC filed Schedule 13G for Afya Ltd (AFYA). 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

Shu Lee-Lean

GSI Technology, Inc. (GSIT)

Schedule 13G/A Ownership 9% Filing-backed
CIK
000110465926095378
Source
SEC Schedule 13G/A
Action
Large stake reduction disclosed
Magnitude
9%
Filed
13 Aug 2026, 06:31:14 UTC
Period
30 Jun 2026

Shu Lee-Lean filed Schedule 13G/A for GSI Technology, Inc. (GSIT). Reported class ownership: 9%. Ownership change: -0.8%. Share change: -3%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

Magnetar Financial LLC

CHURCHILL CAPITAL CORP XI (CCXI)

Schedule 13G/A Ownership 4.6% Filing-backed
CIK
000110465926095372
Source
SEC Schedule 13G/A
Action
Large beneficial ownership stake disclosed
Magnitude
4.6%
Filed
13 Aug 2026, 06:28:57 UTC
Period
30 Jun 2026

Magnetar Financial LLC filed Schedule 13G/A for CHURCHILL CAPITAL CORP XI (CCXI). Reported class ownership: 4.6%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

Magnetar Financial LLC

ILLUMINATION ACQUISITION CORP. I (ILLU)

Schedule 13G/A Ownership 7.8% Filing-backed
CIK
000110465926095371
Source
SEC Schedule 13G/A
Action
Large stake increase disclosed
Magnitude
7.8%
Filed
13 Aug 2026, 06:28:46 UTC
Period
30 Jun 2026

Magnetar Financial LLC filed Schedule 13G/A for ILLUMINATION ACQUISITION CORP. I (ILLU). Reported class ownership: 7.8%. Ownership change: +1.9%. Share change: -0%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

Magnetar Financial LLC

GRAF GLOBAL CORP. (GRAF)

Schedule 13G/A Ownership 6% Filing-backed
CIK
000110465926095370
Source
SEC Schedule 13G/A
Action
Large beneficial ownership stake disclosed
Magnitude
6%
Filed
13 Aug 2026, 06:28:31 UTC
Period
30 Jun 2026

Magnetar Financial LLC filed Schedule 13G/A for GRAF GLOBAL CORP. (GRAF). 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

Magnetar Financial LLC

YORKVILLE INTERNATIONAL CAPITAL CORP (YICC)

Schedule 13G Ownership 5.2% Filing-backed
CIK
000110465926095369
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
5.2%
Filed
13 Aug 2026, 06:27:59 UTC
Period
30 Jun 2026

Magnetar Financial LLC filed Schedule 13G for YORKVILLE INTERNATIONAL CAPITAL CORP (YICC). Reported class ownership: 5.2%. 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
Doma Perpetual Capital Management LLC CIK 0001962221 AFYA Afya Ltd 2,719,969 5.1% SEC filing
Shu Lee-Lean CIK 0001394413 GSIT GSI Technology, Inc. 3,543,989 9% SEC filing
Magnetar Financial LLC CIK 0001352851 CCXI CHURCHILL CAPITAL CORP XI 1,918,525 4.6% SEC filing
Magnetar Financial LLC CIK 0001352851 ILLU ILLUMINATION ACQUISITION CORP. I 1,849,995 7.8% SEC filing
Magnetar Financial LLC CIK 0001352851 GRAF GRAF GLOBAL CORP. 849,999 6% SEC filing
Magnetar Financial LLC CIK 0001352851 YICC YORKVILLE INTERNATIONAL CAPITAL CORP 1,200,000 5.2% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 LPAA Launch One Acquisition Corp. 20,000 0.1% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G9640P104 WILCO 63 CORP 1,800,000 7.8% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G90420103 TRIBECA STRATEGIC ACQUISITION CORP 1,300,000 8.9% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 SPKL Spark I Acquisition Corporation 10,287 0.2% SEC filing
Magnetar Financial LLC CIK 0001352851 OTAI STARLINK AI ACQUISITION CORP 999,990 7.3% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G8251A109 SNOW ROTHSCHILD ACQUISITION CORP 1,188,310 5.3% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 MACI Melar Acquisition Corp. I 5 0% SEC filing
Magnetar Financial LLC CIK 0001352851 SAGU SHREYA ACQUISITION GROUP 750,000 6.7% SEC filing
Magnetar Financial LLC CIK 0001352851 RREV RRE VENTURES ACQUISITION CORP 2,000,000 8% SEC filing
Magnetar Financial LLC CIK 0001352851 QLEP QUANTUM LEAP ACQUISITION CORP 1,500,000 7% SEC filing
Magnetar Financial LLC CIK 0001352851 PTOR PRAETORIAN ACQUISITION CORP 1,500,000 5.9% SEC filing
Magnetar Financial LLC CIK 0001352851 PLUN PLUTONIAN ACQUISITION CORP II 650,000 5.7% SEC filing
Magnetar Financial LLC CIK 0001352851 PTAC PATRIOT ACQUISITION CORP 1,484,000 8.5% SEC filing
Magnetar Financial LLC CIK 0001352851 OHAC OCEANHAWK ACQUISITION CORP 986,320 5.2% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G5701H106 LONG TABLE GROWTH CORP 1,397,957 8.1% SEC filing
Magnetar Financial LLC CIK 0001352851 KEYYU KEYSTONE ACQUISITION CORP 2,000,000 7% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 QSEA Quartzsea Acquisition Corporation 993,296 8% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G50004103 JAB ACQUISITION CORP I 900,000 5.2% SEC filing
Magnetar Financial LLC CIK 0001352851 IDAC IRON DOME ACQUISITION I CORP 1,000,000 6.3% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G49097101 INTERPRIVATE INVESTMENT PARTNERS V INC 1,917,355 9.3% SEC filing
Magnetar Financial LLC CIK 0001352851 GSRV GSR V ACQUISITION CORP. 1,965,000 8.3% SEC filing
Magnetar Financial LLC CIK 0001352851 GCGR GENERAL CATALYST GLOBAL RESILIENCE MERGER CORP. 2,500,000 6.1% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G37307108 FUTURECORP SPACE ACQUISITION 1 1,400,000 6.1% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 PHYT Pyrophyte Acquisition Corp. 482,615 7.5% SEC filing
Magnetar Financial LLC CIK 0001352851 FTHA FOREFRONT TECH HOLDINGS ACQUISITION CORP 875,000 8.8% SEC filing
Magnetar Financial LLC CIK 0001352851 CAII COLLECTIVE ACQUISITION CORP. II 2,178,000 9.8% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G19316101 CARTESIAN GROWTH CORP IV 1,750,000 6.4% SEC filing
Magnetar Financial LLC CIK 0001352851 AACP APOGEE ACQUISITION CORP 1,250,000 7% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 SEVCF Sono Group N.V. 52,000 3.6% SEC filing
Magnetar Financial LLC CIK 0001352851 CXII CHURCHILL CAPITAL CORP XII 2,700,000 6.5% SEC filing
Magnetar Financial LLC CIK 0001352851 CUSIP G1810A108 BURTECH ACQUISITION CORP II 700,000 8.4% SEC filing
Magnetar Financial LLC CIK 0001352851 APMC AMPERCAP ACQUISITION CO 1,200,000 8% SEC filing
Magnetar Financial LLC CIK 0001352851 ETSS ENERGY TRANSITION SPECIAL OPPORTUNITIES 1,250,000 8.3% SEC filing
Magnetar Financial LLC CIK 0001352851 BREZ BREEZE ACQUISITION CORP. II 1,225,000 8.3% SEC filing
Magnetar Financial LLC CIK 0001352851 ACGC ACP HOLDINGS ACQUISITION CORP. 1,600,000 7.3% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 PGAC Pantages Capital Acquisition Corporation 205,000 6.9% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 BSAA BEST SPAC I Acquisition Corp. 0 0% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 EURK Eureka Acquisition Corp 0 0% SEC filing
Cygnus Equity GP, Ltd. CIK 0002147265 DSC DSC Holdings Ltd. 60,673,003 9.1% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 FVN Future Vision II Acquisition Corp. 11,000 0.1% SEC filing
MIZUHO FINANCIAL GROUP INC CIK 0001335730 UYSC UY Scuti Acquisition Corp. 469,800 6.1% SEC filing
Ardagh Group S.A. CIK 0001689662 AMBP Ardagh Metal Packaging S.A. 454,375,314 76% SEC filing
LORD, ABBETT & CO. LLC CIK 0000728100 CUSIP 54401J209 Lord Abbett Flexible Income Fund 1,499,652 6.7% SEC filing
BANCO BILBAO VIZCAYA ARGENTARIA, S.A. CIK 0000842180 PSNY Polestar Automotive Holding UK PLC 7,755,946 4.7% SEC filing
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