Hudson Bay Capital Management LP

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

Total Filings

172

Stocks Covered

112

Latest Filing

Feb 11, 2026

Filings

PMI

Picard Medical, Inc.

SC 13G · Feb 11, 2026

8.7%

7.0M shares

MDAI

Spectral AI, Inc

SC 13G · Feb 11, 2026

7.8%

2.5M shares

MNKTQ

Keenova Therapeutics plc

SC 13G/A · Feb 11, 2026

5.2%

2.0M shares

FACT

FACT II Acquisition Corp.

SC 13G/A · Feb 11, 2026

4.3%

800K shares

SRFM

SURF AIR MOBILITY INC.

SC 13G · Feb 10, 2026

10.0%

7.8M shares

N/A

Alussa Energy Acquisition Corp. II

SC 13G · Feb 10, 2026

5.2%

1.5M shares

DTSQ

DT Cloud Star Acquisition Corp

SC 13G/A · Feb 10, 2026

0.0%

0 shares

PLYM

Plymouth Industrial REIT, Inc.

SC 13G/A · Feb 9, 2026

0.7%

302K shares

ETHZ

ETHZilla Corp

SC 13G/A · Feb 9, 2026

1.8%

350K shares

PLYM

Plymouth Industrial REIT, Inc.

SC 13G · Nov 12, 2025

5.7%

2.5M shares

ORIQ

Origin Investment Corp I

SC 13G · Nov 12, 2025

5.8%

500K shares

IPCX

Inflection Point Acquisition Corp. III

SC 13G · Nov 12, 2025

7.0%

1.8M shares

ETHZ

ETHZilla Corp

SC 13G · Nov 12, 2025

10.0%

17.8M shares

BACQ

Inflection Point Acquisition Corp. IV

SC 13G/A · Nov 12, 2025

4.9%

1.2M shares

WLAC

Willow Lane Acquisition Corp.

SC 13G/A · Nov 12, 2025

0.0%

0 shares

DMAA

Drugs Made In America Acquisition Corp.

SC 13G/A · Nov 12, 2025

4.6%

1.6M shares

OTRKQ

Ontrak, Inc.

SC 13G/A · Nov 12, 2025

5.0%

398K shares

TVA

Texas Ventures Acquisition III Corp

SC 13G/A · Nov 12, 2025

2.1%

483K shares

UYSC

UY Scuti Acquisition Corp.

SC 13G · Aug 8, 2025

5.9%

450K shares

TVA

Texas Ventures Acquisition III Corp

SC 13G · Aug 8, 2025

6.2%

1.4M shares

SWTX

SpringWorks Therapeutics, Inc.

SC 13G · Aug 8, 2025

5.2%

3.9M shares

RAC

Rithm Acquisition Corp.

SC 13G · Aug 8, 2025

8.1%

1.9M shares

OTRKQ

Ontrak, Inc.

SC 13G · Aug 8, 2025

10.0%

813K shares

JACS

Jackson Acquisition Co II

SC 13G · Aug 8, 2025

5.6%

1.3M shares

FACT

FACT II Acquisition Corp.

SC 13G · Aug 8, 2025

5.4%

1.0M shares

NKLR

GSR III Acquisition Corp.

SC 13G/A · Aug 8, 2025

0.6%

131K shares

ALDF

Aldel Financial II Inc.

SC 13G/A · Aug 8, 2025

4.8%

1.4M shares

HUDI

Huadi International Group Co., Ltd.

SC 13G/A · Aug 7, 2025

0.0%

0 shares

GDST

Goldenstone Acquisition Ltd.

SC 13G/A · Aug 7, 2025

0.0%

0 shares

BFAC

Battery Future Acquisition Corp.

SC 13G/A · Aug 7, 2025

0.0%

0 shares

AIMBU

Aimfinity Investment Corp. I

SC 13G/A · Aug 7, 2025

0.0%

0 shares

MNKTQ

Mallinckrodt plc

SC 13G/A · Aug 7, 2025

6.3%

2.5M shares

HWH

HWH International Inc.

SC 13G · May 14, 2025

5.2%

357K shares

PBM

Psyence Biomedical Ltd.

SC 13G/A · May 14, 2025

5.0%

238K shares

FTII

FutureTech II Acquisition Corp.

SC 13G/A · May 14, 2025

4.7%

199K shares

FLG

Flagstar Financial, Inc.

SC 13G/A · May 14, 2025

8.4%

34.7M shares

EGRVF

Evergreen Corp

SC 13G · May 14, 2025

7.3%

201K shares

DMAA

Drugs Made In America Acquisition Corp.

SC 13G · May 14, 2025

5.4%

1.8M shares

ALDF

Aldel Financial II Inc.

SC 13G · May 14, 2025

6.1%

1.4M shares

QETA

Quetta Acquisition Corp

SC 13G · Apr 4, 2025

13.8%

518K shares

PBM

Psyence Biomedical Ltd.

SC 13G/A · Feb 11, 2025

10.0%

380K shares

NKLR

GSR III Acquisition Corp.

SC 13G/A · Feb 11, 2025

6.4%

1.5M shares

DTSQ

DT Cloud Star Acquisition Corporation

SC 13G/A · Feb 11, 2025

6.1%

546K shares

BACQ

Bleichroeder Acquisition Corp.

SC 13G/A · Feb 11, 2025

5.9%

1.5M shares

APVO

Aptevo Therapeutics Inc.

SC 13G/A · Feb 10, 2025

5.0%

77K shares

IGTA

Inception Growth Acquisition Limited

SC 13G/A · Feb 10, 2025

0.0%

0 shares

WLAC

Willow Lane Acquisition Corp.

SC 13G · Feb 10, 2025

5.9%

750K shares

PBM

Psyence Biomedical Ltd.

SC 13G · Feb 10, 2025

10.0%

380K shares

NKLR

GSR III Acquisition Corp.

SC 13G · Feb 10, 2025

6.4%

1.5M shares

DTSQ

DT Cloud Star Acquisition Corporation

SC 13G · Feb 10, 2025

6.1%

546K shares