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Wellington Management Group LLP

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

754

Stocks Covered

340

Latest Filing

Mar 5, 2026

Filings

Fluor Corporation

SC 13G/A · Feb 10, 2025

6.4%

10.9M shares

Synovus Financial Corp.

SC 13G/A · Feb 10, 2025

5.5%

7.8M shares

Surgery Partners, Inc.

SC 13G/A · Feb 10, 2025

4.7%

5.9M shares

StepStone Group Inc.

SC 13G/A · Feb 10, 2025

4.8%

3.5M shares

Argan, Inc.

SC 13G/A · Feb 10, 2025

4.6%

629K shares

Myriad Genetics, Inc.

SC 13G/A · Feb 10, 2025

6.6%

6.0M shares

Prothena Corporation Public Limited Company

SC 13G/A · Feb 10, 2025

9.5%

5.1M shares

Centerspace

SC 13G/A · Feb 10, 2025

4.9%

804K shares

Boot Barn Holdings, Inc.

SC 13G · Feb 10, 2025

7.1%

2.2M shares

General Dynamics Corporation

SC 13G/A · Feb 10, 2025

3.0%

8.3M shares

FMC Corporation

SC 13G/A · Feb 10, 2025

9.7%

12.1M shares

Mid Penn Bancorp, Inc.

SC 13G · Feb 10, 2025

7.6%

1.5M shares

Vital Farms, Inc.

SC 13G · Feb 10, 2025

5.6%

2.4M shares

Guardant Health, Inc.

SC 13G/A · Feb 10, 2025

3.9%

4.9M shares

Visteon Corporation

SC 13G/A · Feb 10, 2025

6.1%

1.7M shares

Alkermes Public Limited Company

SC 13G/A · Feb 10, 2025

4.3%

7.0M shares

Exact Sciences Corporation

SC 13G/A · Feb 10, 2025

6.7%

12.4M shares

IDEX Corporation

SC 13G · Feb 10, 2025

5.6%

4.2M shares

EQT Corporation

SC 13G/A · Feb 10, 2025

8.9%

53.3M shares

PTC Therapeutics, Inc.

SC 13G/A · Feb 10, 2025

6.2%

4.8M shares

MFA Financial, Inc.

SC 13G/A · Feb 10, 2025

7.7%

7.9M shares

Amicus Therapeutics, Inc.

SC 13G/A · Feb 10, 2025

9.5%

28.5M shares

ACCO Brands Corporation

SC 13G/A · Feb 10, 2025

2.3%

2.2M shares

Flex Ltd.

SC 13G/A · Feb 10, 2025

5.3%

20.7M shares

Coterra Energy Inc.

SC 13G/A · Feb 6, 2025

11.1%

81.6M shares

Qiagen N.V.

SC 13G · Feb 6, 2025

10.7%

23.3M shares

Option Care Health, Inc.

SC 13G/A · Dec 4, 2024

10.0%

17.1M shares

Flex Ltd.

SC 13G/A · Nov 8, 2024

8.7%

34.4M shares

Antero Resources Corporation

SC 13G · Nov 8, 2024

5.6%

17.5M shares

Territorial Bancorp Inc.

SC 13G · Nov 8, 2024

8.9%

786K shares

ZoomInfo Technologies Inc.

SC 13G/A · Nov 8, 2024

0.5%

1.7M shares

Popular, Inc.

SC 13G/A · Nov 8, 2024

2.6%

1.9M shares

Antero Resources Corporation

SC 13G · Nov 8, 2024

5.6%

17.5M shares

Territorial Bancorp Inc.

SC 13G · Nov 8, 2024

8.9%

786K shares

ZoomInfo Technologies Inc.

SC 13G/A · Nov 8, 2024

0.5%

1.7M shares

Avidity Biosciences, Inc.

SC 13G · Nov 8, 2024

6.0%

7.0M shares

Flex Ltd.

SC 13G/A · Nov 8, 2024

8.7%

34.4M shares

Antero Resources Corporation

SC 13G · Nov 8, 2024

5.6%

17.5M shares

Hamilton Insurance Group, Ltd.

SC 13G · Nov 8, 2024

6.1%

3.7M shares

MBX Biosciences, Inc.

SC 13G · Nov 8, 2024

9.2%

2.9M shares

The AZEK Company Inc.

SC 13G/A · Nov 8, 2024

9.8%

14.2M shares

Revolution Medicines, Inc.

SC 13G/A · Nov 8, 2024

6.8%

11.4M shares

TPG Inc.

SC 13G/A · Nov 8, 2024

8.3%

8.0M shares

agilon health, Inc.

SC 13G/A · Nov 8, 2024

12.8%

52.9M shares

Apellis Pharmaceuticals, Inc.

SC 13G/A · Nov 8, 2024

12.8%

15.6M shares

Exact Sciences Corporation

SC 13G/A · Nov 8, 2024

7.9%

14.7M shares

HA Sustainable Infrastructure Capital, Inc.

SC 13G/A · Nov 8, 2024

11.6%

13.5M shares

Visteon Corporation

SC 13G/A · Nov 8, 2024

7.6%

2.1M shares

Sempra

SC 13G · Nov 8, 2024

5.4%

34.3M shares

PTC Therapeutics, Inc.

SC 13G/A · Nov 8, 2024

10.3%

7.9M shares