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PEAK6 Capital Management LLC

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

Total Filings

12

Stocks Covered

6

Latest Filing

Feb 11, 2026

Filings

Webull Corp

SC 13G · Feb 11, 2026

6.5%

27.2M shares

Insight Acquisition Corp.

SC 13G · Mar 21, 2024

0.0%

0 shares

AltC Acquisition Corp.

SC 13G · Mar 21, 2024

0.0%

0 shares

Sustainable Development Acquisition I Corp.

SC 13G · Feb 10, 2023

7.1%

2.3M shares

Insight Acquisition Corp.

SC 13G · Feb 10, 2023

9.9%

2.4M shares

Healthwell Acquisition Corp. I

SC 13G · Feb 10, 2023

6.3%

1.6M shares

AltC Acquisition Corp.

SC 13G · Feb 10, 2023

6.4%

3.3M shares

Sustainable Development Acquisition I Corp.

SC 13G · Feb 14, 2022

7.1%

2.3M shares

Insight Acquisition Corp.

SC 13G · Feb 11, 2022

9.9%

2.4M shares

Healthwell Acquisition Corp. I

SC 13G · Feb 11, 2022

6.3%

1.6M shares

AltC Acquisition Corp.

SC 13G · Feb 11, 2022

6.4%

3.3M shares

Ahren Acquisition Corp.

SC 13G · Feb 11, 2022

6.9%

2.1M shares