Beneficial ownership — 13D / 13G
85,680 recent Schedule 13D / 13G filings — activist (13D) and passive (13G) stakes above 5% of a class.
Coverage begins December 2024, when the SEC required these schedules to be filed as structured XML.
| Reporting person | Issuer | Schedule | % of class | Event date | Filed |
|---|---|---|---|---|---|
| American Century Investment Management, Inc. | SPB Spectrum Brands Holdings, Inc. | 13G/A | 9.1% | Jun 30, 2026 | 3mo |
| Cormorant Asset Management, LP | RLYB Rallybio Corp | 13G/A | 0% | Jun 30, 2026 | 3mo |
| Redmile Group, LLC | SRRK Scholar Rock Holding Corp | 13G/A | 3.6% | Jun 30, 2026 | 3mo |
| Karpus Management, Inc. | HEQ John Hancock Diversified Income Fund | 13G | 7.52% | Jun 30, 2026 | 3mo |
| ARIEL INVESTMENTS, LLC | CLB Core Laboratories Inc. | 13G/A | 30.5% | Jun 30, 2026 | 3mo |
| T. Rowe Price Investment Management, Inc. | QDEL QuidelOrtho Corp | 13G/A | 2.6% | Jun 30, 2026 | 3mo |
| Nextech Crossover I GP S.a. r.l. | TNGX Tango Therapeutics, Inc. | 13G/A | 0% | Jun 30, 2026 | 3mo |
| Vivo Opportunity Fund Holdings, L.P. | CLNN Clene Inc. | 13G/A | 9.99% | Jun 30, 2026 | 3mo |
| Think Investments LP | TASK TaskUs, Inc. | 13G/A | 9.6% | Jun 30, 2026 | 3mo |
| LMR Partners LLP | PTAC Patriot Acquisition Corp. | 13G | 5.7% | Jun 30, 2026 | 3mo |
| ARK Investment Management LLC | MASS 908 Devices Inc. | 13G/A | 5.32% | Jun 30, 2026 | 3mo |
| AMERIPRISE FINANCIAL INC | BCV Bancroft Fund Ltd | 13G/A | 4.5% | Jun 30, 2026 | 3mo |
| ARMISTICE CAPITAL, LLC | BJDX Bluejay Diagnostics, Inc. | 13G | 9.99% | Jun 30, 2026 | 3mo |
| METEORA CAPITAL, LLC | CRAQ Cal Redwood Acquisition Corp. | 13G/A | 9.58% | Jun 30, 2026 | 3mo |
| CVI Investments, Inc. | NYXH Nyxoah SA | 13G/A | 9.9% | Jun 30, 2026 | 3mo |
| BROWN ADVISORY INC | NOMD Nomad Foods Ltd | 13G/A | 3.46% | Jun 30, 2026 | 3mo |
| Newtyn Management, LLC | ZOOZ ZOOZ Strategy Ltd. | 13G/A | 6.6% | Jun 30, 2026 | 3mo |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT | AMC Amc Entertainment Holdings, Inc. | 13G/A | 5.8% | Jun 30, 2026 | 3mo |
| Infinite Grid Capital, LP | NEOV NeoVolta Inc. | 13G/A | 7.6% | Jun 30, 2026 | 3mo |
| Lynx1 Capital Management LP | GHRS GH Research PLC | 13G/A | 19.3% | Jun 30, 2026 | 3mo |
| CVI Investments, Inc. | BNGO Bionano Genomics, Inc. | 13G/A | 9.9% | Jun 30, 2026 | 3mo |
| T. Rowe Price Investment Management, Inc. | MTSI MACOM Technology Solutions Holdings, Inc. | 13G/A | 3.7% | Jun 30, 2026 | 3mo |
| Rubric Capital Management LP | ARDX Ardelyx, Inc. | 13G | 6.56% | Jun 30, 2026 | 3mo |
| Capital Ventures International | QNC Quantum eMotion Corp | 13G/A | 2.4% | Jun 30, 2026 | 3mo |
| LMR Partners LLP | BID Tribeca Strategic Acquisition Corp. | 13G | 6.8% | Jun 30, 2026 | 3mo |
| American Century Investment Management, Inc. | OEC Orion S.A. | 13G | 5.7% | Jun 30, 2026 | 3mo |
| ARMISTICE CAPITAL, LLC | BDRX Biodexa Pharmaceuticals Plc | 13G/A | 9.99% | Jun 30, 2026 | 3mo |
| Harraden Circle Investments, LLC | NWAX New America Acquisition I Corp. | 13G/A | 6.65% | Jun 30, 2026 | 3mo |
| Harraden Circle Investments, LLC | PECE Peace Acquisition Corp. | 13G/A | 2.96% | Jun 30, 2026 | 3mo |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | ANVS Annovis Bio, Inc. | 13G | 6.1% | Jun 30, 2026 | 3mo |
| AMERIPRISE FINANCIAL INC | BOOM DMC Global Inc. | 13G | 6.5% | Jun 30, 2026 | 3mo |
| TANG CAPITAL MANAGEMENT LLC | KALV KalVista Pharmaceuticals, Inc. | 13G/A | 0% | Jun 30, 2026 | 3mo |
| Harraden Circle Investments, LLC | CTAA Clearthink 1 Acquisition Corp. | 13G/A | 0% | Jun 30, 2026 | 3mo |
| RA CAPITAL MANAGEMENT, L.P. | KPTI Karyopharm Therapeutics Inc. | 13G/A | 9.9% | Jun 30, 2026 | 3mo |
| PRICE T ROWE ASSOCIATES INC /MD/ | EQH Equitable Holdings, Inc. | 13G/A | 6.7% | Jun 30, 2026 | 3mo |
| Ravi Mhatre | RBRK Rubrik, Inc. | 13G/A | 2% | Jun 30, 2026 | 3mo |
| Davidson Kempner Capital Management LP | MNTS Momentus Inc. | 13G/A | 4.51% | Jun 30, 2026 | 3mo |
| Harraden Circle Investments, LLC | OHAC Oceanhawk Acquisition Corp. | 13G/A | 0% | Jun 30, 2026 | 3mo |
| ARISTEIA CAPITAL, L.L.C. | AACP Apogee Acquisition Corp | 13G | 7.05% | Jun 30, 2026 | 3mo |
| Westchester Capital Management, LLC | SZZL Sizzle Acquisition Corp. II | 13G/A | 4.96% | Jun 30, 2026 | 3mo |
| RA CAPITAL MANAGEMENT, L.P. | EWTX Edgewise Therapeutics, Inc. | 13G/A | 7.8% | Jun 30, 2026 | 3mo |
| Fort Baker Capital Management LP | CCIX Churchill Capital Corp IX | 13G/A | 9.7% | Jun 30, 2026 | 3mo |
| Jericho Capital Asset Management L.P. | WK Workiva Inc | 13G | 6.6% | Jun 30, 2026 | 3mo |
| TENOR CAPITAL MANAGEMENT Co., L.P. | MLAC Mountain Lake Acquisition Corp. | 13G/A | 0% | Jun 30, 2026 | 3mo |
| ARMISTICE CAPITAL, LLC | ESLA Estrella Immunopharma, Inc. | 13G/A | 4.99% | Jun 30, 2026 | 3mo |
| ARISTEIA CAPITAL, L.L.C. | IPXG Inflection Point Acquisition Corp. VII | 13G | 5.42% | Jun 30, 2026 | 3mo |
| ARISTEIA CAPITAL, L.L.C. | ATLQ Atlantic Acquisition Corp I | 13G | 5.22% | Jun 30, 2026 | 3mo |
| GLENVIEW CAPITAL MANAGEMENT, LLC | MYGN Myriad Genetics Inc | 13G/A | 0% | Jun 30, 2026 | 3mo |
| Karpus Management, Inc. | ECNS iShares MSCI China Small-Cap ETF | 13G | 5.01% | Jun 30, 2026 | 3mo |
| VAN ECK ASSOCIATES CORP | ELVR Elevra Lithium Ltd | 13G | 6.4% | Jun 30, 2026 | 3mo |