Amprius TechnologiesAMPX.WSPreferred / convertible
13F holders, Q2 2026 (June 30)10holders −3
2new positions
5sold out
$5.93avg. 13F price*
At the end of Q2 2026, 10 institutions reported holding Amprius Technologies Inc. (AMPX.WS) in their 13F filings, down 3 from Q1 2026. 2 opened new positions and 5 sold out. The largest holders were LMR Partners LLP ($11.1M), Caption Management, LLC ($8.4M) and DRW Securities, LLC ($2.1M).
- Company
- Amprius Technologies Inc.
- CUSIP
- 03214Q116
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $157K |
| Exits | 5 | $12.4M |
All 13F filers, Q1 2026 → Q2 2026: 421,594 shares bought and 5,896,106 shares sold, net −5,474,512 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 10 holders
| LMR Partners LLP | — | Reduce -57.7% | 1,899,260 | $11.1M |
| Caption Management, LLC | — | Add +32.1% | 1,432,795 | $8.4M |
| DRW Securities, LLC | — | Add +6.3% | 356,445 | $2.1M |
| Janney Montgomery Scott LLC | — | Add +0.1% | 158,405 | $928K |
| Aristeia Capital, L.L.C. | — | Reduce -88.3% | 142,415 | $830K |
| Zazove Associates LLC | — | Add +32.4% | 102,096 | $595K |
| Boothbay Fund Management, LLC | — | Reduce -91.5% | 39,991 | $554K |
| HRT Financial LP | — | New | 25,983 | $152K |
| UBS Group AG | — | New | 811 | $5K |
| Farther Finance Advisors, LLC | — | No change | 2 | $12 |
"% of holder's portfolio" is AMPX.WS's weight in each manager's 13F, not the share of Amprius Technologies Inc. the manager owns.