Abpro Holdings, Inc.
ABPWW- Exchange
- OTC
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001893219
No open-market purchases or sales by Abpro Holdings, Inc. insiders were filed in the last 90 days; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.
Other share classesABPO
13F holders, Q1 2026
Institutional positions in Abpro Holdings, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 4
- −23 vs. Q4 2025
- Shares held
- 429.7K
- −6.71M (−94.0%) vs. Q4 2025
- Total value
- $1.11K
- −$128.8K (−99.1%) vs. Q4 2025
- New holders
- 1
- 0 more added
- Sold out
- 24
- 0 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ABPWW on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 0 | $0 |
| Q1 2026 | 4 | $1.11K |
| Q4 2025 | 28 | $135.8K |
| Q3 2025 | 27 | $211.3K |
| Q2 2025 | 29 | $197.8K |
| Q1 2025 | 27 | $243.4K |
| Q4 2024 | 29 | $603.4K |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Abpro Holdings, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Flow Traders U.S. LLC | 51,588 | $0 | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 8,333 | $17 | 0.00% | 00.0% | Unchanged |
| Mizuho Securities USA LLC | 11,386 | $23 | 0.00% | +11,386 | New |
| Diametric Capital, LP | 358,427 | $1.07K | 0.00% | 00.0% | Unchanged |
| Saba Capital Management, L.P. | 0 | $0 | 0.00% | −997,048−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | – | Sold out |
| MMCAP International Inc. SPC | 0 | $0 | 0.00% | −675,000−100.0% | Sold out |
| Calamos Advisors LLC | 0 | $0 | 0.00% | −625,000−100.0% | Sold out |
| CNH Partners LLC | 0 | $0 | 0.00% | −546,540−100.0% | Sold out |
| Linden Advisors LP | 0 | $0 | 0.00% | −499,999−100.0% | Sold out |
| Wolverine Asset Management LLC | 0 | $0 | 0.00% | −472,720−100.0% | Sold out |
| Polar Asset Management Partners Inc. | 0 | $0 | 0.00% | −378,328−100.0% | Sold out |
| Clear Street Group Inc. | 0 | $0 | 0.00% | −376,785−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −375,000−100.0% | Sold out |
| Aristeia Capital LLC | 0 | $0 | 0.00% | −273,125−100.0% | Sold out |
| Toronto Dominion Bank | 0 | $0 | 0.00% | −273,798−100.0% | Sold out |
| Davidson Kempner Capital Management LP | 0 | $0 | 0.00% | −250,000−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −225,000−100.0% | Sold out |
| Tenor Capital Management Co., L.P. | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −179,100−100.0% | Sold out |
| Picton Mahoney Asset Management | 0 | $0 | 0.00% | −125,000−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −125,000−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −40,488−100.0% | Sold out |
| Sculptor Capital LP | 0 | $0 | 0.00% | −34,101−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −16,227−100.0% | Sold out |
| Meteora Capital, LLC | 0 | $0 | 0.00% | −8,154−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −336−100.0% | Sold out |
| Sandia Investment Management LP | – | – | – | – | Not filed |